Obwohl der Konzern eine hohe praktische Relevanz im europäischen Binnenmarkt aufweist, besteht kein einheitliches europäisches Konzernrecht. Die Arbeit entwickelt einen Regelungsvorschlag für ein europäisches Konzernleitungsrecht und schließt damit diese Lücke. Zunächst werden die rechtlichen Grundlagen des Konzerns dargestellt. Anschließend werden die Akteure des Konzerns und deren Eigeninteressen beschrieben. Die wirtschaftlichen Anreize und Risiken der Konzernierung werden diskutiert. Die ökonomische Analyse des grenzüberschreitenden Konzerns gibt die optimale Konzernstruktur vor, die rechtlich abgesichert werden muss. Das sekundärrechtlich zu gewährleistende Weisungsrecht muss sich nahtlos in die Rechtsordnungen der einzelnen Mitgliedstaaten einfügen. Es werden die bestehenden Möglichkeiten einer einheitlichen Konzernleitung und deren Grenzen aufgezeigt. Letztere sind die Haftungsrisiken für die Geschäftsführer der Mutter- und der Tochtergesellschaft und die Rechte der Minderheitsgesellschafter. Als Beispiele dienen die deutsche sowie die französische Rechtsordnung. Anschließend wird untersucht, ob und inwieweit die Grenzen der einheitlichen Leitung durch die Anerkennung des Gruppeninteresses überwunden werden können. Das französische und das deutsche Recht halten unterschiedliche Antworten bereit, so dass die Begriffskonturierung nicht den nationalen Rechtsordnungen überlassen werden sollte, sondern auf der Grundlage von binnenmarktorientierten Effizienzerwägungen autonom bestimmt werden sollte. Diese Überwindung durch die Anerkennung des Gruppeninteresses wird ihrerseits durch das Insolvenzrecht begrenzt. / Although the corporate group is of great practical importance in the European internal market, there is no uniform European corporate group law. The thesis develops a regulatory proposal for a European group management law and thus remedies this absence. First, the legal basis of the corporate group is presented. Then, the actors of the group and their own interests are demonstrated. The economic incentives and risks of integration into a group are discussed. The economic analysis of the cross-border group prescribes the optimal group structure, which must be legally secured. The right to issue instructions, which is to be guaranteed by secondary legislation, must fit smoothly into the legal systems of the individual Member States. The existing possibilities of uniform group management and the limits are highlighted. The latter are the liability risks for the managers of the parent and the subsidiary and the rights of minority shareholders. The German and French systems serve as examples. It is then examined whether and to what extent the limitations of uniform management can be overcome by the recognition of the group interest. French and German law provide different answers, so that the contours of the concept should not be left to the national legal systems but should be determined autonomously based on efficiency considerations oriented towards the internal market. This overcoming by the recognition of the group interest does not apply without limitations in insolvency law.

Recently, South African company law underwent a dramatic overhaul through the introduction of the Companies Act 71 of 2008. Central to company law is the promotion of corporate governance: companies no longer are accountable to their shareholders only but to society at large. Leaders should direct company strategy and operations with a view to achieving the triple bottom-line (economic, social and environmental performance) and, thus, should manage the business in a sustainable manner. An important question in company law today: In whose interest should the company be managed? Corporate governance needs to address the entire span of responsibilities to all stakeholders of the company, such as customers, employees, shareholders, suppliers and the community at large. The Companies Act aims to balance the rights and obligations of shareholders and directors within companies and encourages the efficient and responsible management of companies. The promotion of human rights is central in the application of company law: it is extremely important given the significant role of enterprises within the social and economic life of the nation. The interests of various stakeholder groups in the context of the corporation as a “social institution” should be enhanced and protected. Because corporations are a part of society and the community they are required to be socially responsible and to be more accountable to all stakeholders in the company. Although directors act in the best interests of shareholders, collectively, they must also consider the interests of other stakeholders. Sustainable relationships with all the relevant stakeholders are important. The advancement of social justice is important to corporations in that they should take into account the Constitution, labour and company law legislation in dealing with social justice issues. Employees have become important stakeholders in companies and their needs should be taken into account in a bigger corporate governance and social responsibility framework. Consideration of the role of employees in corporations entails notice that the Constitution grants every person a fundamental right to fair labour practices. Social as well as political change became evident after South Africa's re-entry into the world in the 1990s. Change to socio-economic conditions in a developing country is also evident. These changes have a major influence on South African labour law. Like company law, labour law, to a large extent, is codified. Like company law, no precise definition of labour law exists. From the various definitions, labour law covers both the individual and collective labour law and various role-players are involved. These role-players include trade unions, employers/companies, employees, and the state. The various relationships between these parties, ultimately, are what guides a certain outcome if there is a power play between them. In 1995 the South African labour market was transformed by the introduction of the Labour Relations Act 66 of 1995. The LRA remains the primary piece of labour legislation that governs labour law in South Africa. The notion of industrial democracy and the transformation of the workplace are central issues in South African labour law. The constitutional change that have taken place in South Africa, by which the protection of human rights and the democratisation of the workplace are advanced contributed to these developments. Before the enactment of the LRA, employee participation and voice were much-debated topics, locally and internationally. In considering employee participation, it is essential to take due cognisance of both the labour and company law principles that are pertinent: the need for workers to have a voice in the workplace and for employers to manage their corporations. Employee participation and voice should be evident at different levels: from informationsharing to consultation to joint decision-making. Corporations should enhance systems and processes that facilitate employee participation and voice in decisions that affect employees. The primary research question under investigation is: What role should (and could) employees play in corporate decision-making in South Africa? The main inquiry of the thesis, therefore, is to explore the issue of granting a voice to employees in companies, in particular, the role of employees in the decision-making processes of companies. The thesis explores various options, including supervisory co-determination as well as social co-determination, in order to find solutions that will facilitate the achievement of employee participation and voice in companies in South Africa. / LLD, North-West University, Potchefstroom Campus, 2015

Recently, South African company law underwent a dramatic overhaul through the introduction of the Companies Act 71 of 2008. Central to company law is the promotion of corporate governance: companies no longer are accountable to their shareholders only but to society at large. Leaders should direct company strategy and operations with a view to achieving the triple bottom-line (economic, social and environmental performance) and, thus, should manage the business in a sustainable manner. An important question in company law today: In whose interest should the company be managed? Corporate governance needs to address the entire span of responsibilities to all stakeholders of the company, such as customers, employees, shareholders, suppliers and the community at large. The Companies Act aims to balance the rights and obligations of shareholders and directors within companies and encourages the efficient and responsible management of companies. The promotion of human rights is central in the application of company law: it is extremely important given the significant role of enterprises within the social and economic life of the nation. The interests of various stakeholder groups in the context of the corporation as a “social institution” should be enhanced and protected. Because corporations are a part of society and the community they are required to be socially responsible and to be more accountable to all stakeholders in the company. Although directors act in the best interests of shareholders, collectively, they must also consider the interests of other stakeholders. Sustainable relationships with all the relevant stakeholders are important. The advancement of social justice is important to corporations in that they should take into account the Constitution, labour and company law legislation in dealing with social justice issues. Employees have become important stakeholders in companies and their needs should be taken into account in a bigger corporate governance and social responsibility framework. Consideration of the role of employees in corporations entails notice that the Constitution grants every person a fundamental right to fair labour practices. Social as well as political change became evident after South Africa's re-entry into the world in the 1990s. Change to socio-economic conditions in a developing country is also evident. These changes have a major influence on South African labour law. Like company law, labour law, to a large extent, is codified. Like company law, no precise definition of labour law exists. From the various definitions, labour law covers both the individual and collective labour law and various role-players are involved. These role-players include trade unions, employers/companies, employees, and the state. The various relationships between these parties, ultimately, are what guides a certain outcome if there is a power play between them. In 1995 the South African labour market was transformed by the introduction of the Labour Relations Act 66 of 1995. The LRA remains the primary piece of labour legislation that governs labour law in South Africa. The notion of industrial democracy and the transformation of the workplace are central issues in South African labour law. The constitutional change that have taken place in South Africa, by which the protection of human rights and the democratisation of the workplace are advanced contributed to these developments. Before the enactment of the LRA, employee participation and voice were much-debated topics, locally and internationally. In considering employee participation, it is essential to take due cognisance of both the labour and company law principles that are pertinent: the need for workers to have a voice in the workplace and for employers to manage their corporations. Employee participation and voice should be evident at different levels: from informationsharing to consultation to joint decision-making. Corporations should enhance systems and processes that facilitate employee participation and voice in decisions that affect employees. The primary research question under investigation is: What role should (and could) employees play in corporate decision-making in South Africa? The main inquiry of the thesis, therefore, is to explore the issue of granting a voice to employees in companies, in particular, the role of employees in the decision-making processes of companies. The thesis explores various options, including supervisory co-determination as well as social co-determination, in order to find solutions that will facilitate the achievement of employee participation and voice in companies in South Africa. / LLD, North-West University, Potchefstroom Campus, 2015

O presente trabalho tem por objeto o estudo do instituto da incorporação de ações. Para tanto, será analisado, (i) no primeiro capítulo, o regime legal vigente e sua natureza jurídica, apresentando-se as diferenças em relação à operação de incorporação de sociedade, fazendo inclusive um contraste com o direito norte-americano; (ii) no segundo capítulo, a proteção dos acionistas minoritários em operações de incorporação de controlada e eventual impedimento de voto do acionista controlador, analisando-se os recentes pareceres de orientação emitidos pela CVM; (iii) no terceiro capítulo, o estudo do instituto do tag along e do fechamento de capital e necessidade de realização de oferta pública em operações de incorporação de ações que impliquem transferência de controle ou cancelamento de registro de companhia aberta, à luz das últimas operações realizadas no mercado; (iv) no quarto capítulo, a discussão dos principais precedentes nos quais a CVM decidiu impor restrições ou impedir a realização de operações de incorporação de ações por entender ter havido um tratamento não equitativo entre os acionistas minoritários e controladores, com o objetivo de demonstrar a alteração do comportamento do órgão regulador no decorrer dos anos / The present work aims the study of the stock-for-stock exchange transactions (incorporação de ações). For this purpose, it will be examined (i) in the first part, the current legal regime and legal nature, contemplating differences with the statutory merger (incorporação de sociedade), including a comparison with the US law, (ii) in the second part, the protection of minority shareholders in the context of parent-subsidiary mergers and possible exclusion from voting of the controlling shareholder, taking into account the recent opinions issued by the Brazilian Securities and Exchange Commission (CVM), (iii) in the third part, the study of the tag along rights and the regulation for delisting companies and the need to conduct a tender offer in stock-for-stock exchange transactions involving transfer of control or delisting of a publicly-held company in light of recent transactions, and (iv) in the fourth part, the discussion of the key precedents on which CVM has decided to impose restrictions or prevent the conduct of stock-for-stock transaction under the understanding that there was inequitable treatment of minority shareholders and controlling shareholders, in order to demonstrate the change of the CVMs understanding over the years.

Section 71(3) of the Companies Act 71 of 2008 has introduced into South African company law a provision which for the first time permits the board of directors to remove another director from office in certain specific instances. A further significant innovation in the Companies Act 71 of 2008 is contained in section 162, which empowers a court to make an order declaring a director delinquent or placing him under probation in specific instances. The effect of section 162 is that a court is empowered to remove a director from the board of directors. The focus of this thesis is the removal of directors from office by the board of directors and by the judiciary. The thesis explores the underpinning philosophy of the statutory provisions relating to the removal of directors from office. It also examines the impact of the power given to the board of directors and to the courts to remove a director from office. The grounds and the procedures for the removal of directors by the board of directors and the judiciary are examined. The fiduciary duties applicable to directors in removing a director from the board of directors are also explored. In addition, this thesis examines the removal of directors holding multiple positions or capacities in relation to a company, such as an employee or a shareholder with loaded voting rights. The remedies which may be relied on by a director who has been removed from office by the board of directors are examined. Recommendations are made to strengthen and improve the provisions in the Companies Act 71 of 2008 relating to the removal of directors from office by the board of directors and the judiciary. Amendments to the Companies Act 71 of 2008 are suggested to remove ambiguities; to guard against the abuse of sections 71(3) and 162; to improve the grounds and procedures for the removal of directors by the board of directors and the judiciary, and to enhance the remedies that may be relied on by a director who has been removed from office by the board of directors. / Artikel 71(3) van die Maatskappywet 71 van 2008 het ’n bepaling tot Suid-Afrikaanse maatskappyreg toegevoeg wat die direksie vir die eerste keer in staat stel om ’n ander direkteur in sekere spesifieke gevalle uit sy of haar amp te verwyder. ’n Verdere belangrike vernuwing in die Maatskappywet 71 van 2008 word in artikel 162 vervat, wat ’n hof magtig om ’n bevel uit te vaardig wat ’n direkteur misdadig verklaar of hom of haar in spesifieke gevalle aan ’n proeftydperk onderwerp. Die effek van artikel 162 is dat ’n hof by magte is om ’n direkteur uit die direksie te verwyder. Die fokus van hierdie tesis is die verwydering van direkteure uit hul ampte deur die direksie en die regbank. Die tesis verken die onderliggende filosofie van die statutêre bepalings wat met die verwydering van direkteure uit hul ampte verband hou. Dit ondersoek ook die impak van die bevoegdheid wat aan die direksie en die howe verleen word om ’n direkteur uit sy of haar amp te verwyder. Die gronde en prosedures vir die verwydering van direkteure deur die direksie en die regbank word ondersoek. Die fidusiêre pligte van toepassing op direkteure by die verwydering van ’n direkteur uit die direksie word ook verken. Daarbenewens ondersoek hierdie tesis die verwydering van direkteure wat veelvuldige posisies of hoedanighede met betrekking tot ’n maatskappy beklee, soos ʼn werknemer of aandeelhouer met gelaaide stemregte. Die regsmiddele waarop ’n direkteur, wat deur die direksie uit sy of haar amp verwyder is, kan steun, word ondersoek. Aanbevelings word gemaak om die bepalings in die Maatskappywet 71 van 2008, wat met die verwydering van direkteure uit hul ampte deur die direksie en regbank verband hou, te versterk en te verbeter. Wysigings aan die Maatskappywet 71 van 2008 word voorgestel om dubbelsinnighede uit te skakel; om teen die misbruik van artikels 71(3) en 162 te waak; om die gronde en prosedures vir die verwydering van direkteure deur die direksie en die regbank te verbeter, en om die regsmiddele waarop ’n direkteur wat deur die direksie uit sy of haar amp verwyder is kan steun, te versterk. / ISigaba 71(3) Somthetho weZinkampani 71 ka 2008 sewuze wangenisa emithethweni yezinkampani zaseNingizimu Afrika, umthetho ongowokuqala ovumela ibhodi labaqondisi ukuthi libe namandla wokugudluza omunye umqondisi esikhundleni sakhe ngaphansi kwezimo ezithile. Olunye ushintsho olusha kuMthetho wama-71 weZinkampani ka 2008 uqukethwe yiSigaba 162, wona ugunyaza inkantolo ukuthi ikhiphe umyalelo owazisa umqondisi ngokuthi unecala noma obeka umqondisi ngaphansi kophenyo, phecelezi “probation” ngesinye isikhathi. Inhloso yeSigaba 162 wukunikeza inkantolo igunya lokugudluza umqondisi kwibhodi labaqondisi. Impokophelo yale thisisi wukugudluzwa kwabaqondisi, bagudluzwe yibhodi labaqondisi kanye nomthetho/nobulungisa. Ithisisi ihlola ifilosofi yemithetho ekhishiwe emayelana nokugudluzwa kwabaqondisi ezikhundleni zabo, Kanti futhi ihlola umthelela wamandla anikezwe ibhodi labaqondisi kanye nezinkantolo ukuthi zigudluze umqondisi esikhundleni. Izizathu kanye nengqubo elandelwayo mayelana nokugudluzwa kwabaqondisi yibhodi labaqondisi kanye nomthetho nazo ziyahlolwa. Imisebenzi emayelana nokuthembeka eyenziwa ngabaqondisi ukugudluza umqondisi kwibhodi labaqondisi nayo iyacwaningwa Ngaphezu kwalokhu, le thisisi .iphenya ukugudluzwa kwabaqondisi abaqokwe ezikhundleni eziningi noma abanegunya elithize ngokwengqubo yenkampani, enjengesisebenzi, phecelezi “employee” noma umabelwa-mashezi onamalungelo amaningi okuvota, phecelezi, “loaded with voting rights”. Izeluleko ezingasetshenziswa wumqondisi ogudluzwe esikhundleni sakhe yibhodi labaqondisi nazo ziyahlolwa. Izincomo nazo ziyenziwa ngenhloso yokuqinisa kanye nokuthuthukiswa kwamandla oMthetho we-71 weZinkampani ka 2008, mayelana nokugudluzwa kwabaqondisi ezikhundleni yibhodi labaqondisi kanye nomthetho. Izinguquko zoMthetho wama-71 weZinkampani ka 2008 ziqonde ukususa izixakaxaka, ukulwa nokudlelezelwa kweSigaba 71(3) kanye no 162, ukuthuthukisa izizathu kanye nezingqubo zokugudluzwa kwabaqondisi yibhodi labaqondisi kanye nomthetho, ukuqinisa izindlela zokulungisa ezingasetshenziswa wumqondisi osegudluziwe esikhundleni yibhodi labaqondisi. / Mercantile Law / LL. D.

O presente trabalho tem por objeto o estudo do instituto da incorporação de ações. Para tanto, será analisado, (i) no primeiro capítulo, o regime legal vigente e sua natureza jurídica, apresentando-se as diferenças em relação à operação de incorporação de sociedade, fazendo inclusive um contraste com o direito norte-americano; (ii) no segundo capítulo, a proteção dos acionistas minoritários em operações de incorporação de controlada e eventual impedimento de voto do acionista controlador, analisando-se os recentes pareceres de orientação emitidos pela CVM; (iii) no terceiro capítulo, o estudo do instituto do tag along e do fechamento de capital e necessidade de realização de oferta pública em operações de incorporação de ações que impliquem transferência de controle ou cancelamento de registro de companhia aberta, à luz das últimas operações realizadas no mercado; (iv) no quarto capítulo, a discussão dos principais precedentes nos quais a CVM decidiu impor restrições ou impedir a realização de operações de incorporação de ações por entender ter havido um tratamento não equitativo entre os acionistas minoritários e controladores, com o objetivo de demonstrar a alteração do comportamento do órgão regulador no decorrer dos anos / The present work aims the study of the stock-for-stock exchange transactions (incorporação de ações). For this purpose, it will be examined (i) in the first part, the current legal regime and legal nature, contemplating differences with the statutory merger (incorporação de sociedade), including a comparison with the US law, (ii) in the second part, the protection of minority shareholders in the context of parent-subsidiary mergers and possible exclusion from voting of the controlling shareholder, taking into account the recent opinions issued by the Brazilian Securities and Exchange Commission (CVM), (iii) in the third part, the study of the tag along rights and the regulation for delisting companies and the need to conduct a tender offer in stock-for-stock exchange transactions involving transfer of control or delisting of a publicly-held company in light of recent transactions, and (iv) in the fourth part, the discussion of the key precedents on which CVM has decided to impose restrictions or prevent the conduct of stock-for-stock transaction under the understanding that there was inequitable treatment of minority shareholders and controlling shareholders, in order to demonstrate the change of the CVMs understanding over the years.

Corporate Governance hat einen radikalen Wandel in Europa seit den 1990er Jahren durchgemacht. Der Wandel ist konsolidiert und ist nun Teil des Rechts der modernen Aktiengesellschaften. Brasilianisches Recht wird immer durch die europäische Gesetzgebung inspiriert. Unsere Studie fragt, aus einer vergleichenden Sicht, ob sich das brasilianische Unternehmensrecht auf die europäische Corporate Governance bezieht. Wir konzentrieren uns in Europa auf das deutsche Recht, das englische Recht, das französische Recht und das europäische Recht. Unsere Analyse geht über die Herzen der Unternehmensführung und umfasst Teile, die dem Kapitalmarkt- und dem Umweltrecht angehören, da sie selbstverständlich auch eine Verbindung mit der Corporate Governance und dem Aktienrecht haben. Das Verständnis des Kerns der Unternehmensführung, welcher die Organisation der Verwaltungsorgane der börsennotierten Aktiengesellschaft ist, hängt von der Analyse der rechtlichen Behandlung von Neben-Themen, die aber verwandt sind, ab, wie die Regeln über die Haftung. / Corporate governance has undergone a radical change in Europe since the 1990s. Change has now consolidated and is part of the company law. Brazilian law has always been inspired by European legislation. Our study asks, from a comparative perspective, if the Brazilian corporate law relates to the European corporate governance. In Europe, we focus on German law, English law, French law and Community law. Our analysis goes beyond the heart of corporate governance and includes parts of capital markets law and environmental law, because they obviously also have a connection with corporate governance and company law. The understanding of the core of corporate governance, which is the organization of administrative bodies of the listed company on a regulated market, depends on the analysis of the legal treatment of incidental subjects, but related, as the regime of liability.

Opérations particulièrement complexes, les offres publiques d'acquisition ne cessent de faire parler d'elles, plus particulièrement lorsqu'elles présentent un caractère hostile pour la société visée. De nombreux efforts législatifs ont été mis en œuvre en vue d'encadrer les OPA et de lutter contre les prises de contrôle rampantes. L'analyse du droit positif permet de mettre en lumière ces différents efforts ainsi que leur mise en œuvre à travers diverses techniques par les sociétés visées. Ces dernières ont par ailleurs développé un certain nombre de mécanismes de défense anti-OPA particulièrement efficaces, mais se révélant le plus souvent insuffisants face à l'ingéniosité dont peut faire preuve l'initiateur. Le droit positif montre ainsi ses limites face à des pratiques qui ne cessent d'évoluer. L'analyse prospective du droit anti-OPA permet d'observer les nouvelles mutations que subit le droit positif au regard des nouveaux enjeux économiques. Elle permet également d'envisager de nouveaux modes d'appréhension des OPA hostiles. Il est ainsi possible d'observer que le gouvernement d'entreprise prend une place considérable dans la vie des sociétés cotées. De même, la montée en puissance de la régulation et l'interventionnisme de l’État sont de plus en plus marqués ; et les salariés s'impliquent de plus en plus dans la gestion de l'entreprise. L'ensemble de ces paramètres marquent un glissement progressif vers une réorganisation du mode de fonctionnement des sociétés, ce qui a amené au développement du soft law, un droit à la frontière du droit positif et des pratiques des sociétés. Le soft law constitue à ce titre une approche inédite des OPA hostiles, dont l'analyse permet de cerner les apports liés à la mutation du droit positif et d'envisager l'émergence de nouveaux moyens de défense. Celui-ci doit toutefois demeurer complémentaire au cadre législatif et réglementaire existant. / No abstract

La trascendencia práctica del tema del régimen jurídico de las joint ventures es indudable. En los Estados miembros de la Unión Europea, y más especialmente en España, las joint ventures remiten a una idea de mayor eficiencia económica, permitiendo a las empresas formar alianzas entre ellas, y así mejorar su competitividad, adaptando sus estructuras a las dimensiones crecientes de los mercados europeos y mundiales.Las joint ventures no están reguladas como tales en ninguna legislación nacional europea. El derecho comunitario se concentra por su parte en el análisis de los efectos de estas operaciones sobre la competencia. Las joint ventures adquieren en la práctica, únicamente, su contenido jurídico.Este estudio tiene por objetivo presentar un análisis a la vez teórico y práctico del régimen jurídico de las joint ventures, intentando definir el "valor añadido" del trabajo del jurista profesional cuando interviene en la creación y el funcionamiento de las joint ventures. La adopción de esta óptica funcionalista permite integrar el análisis de los diversos aspectos jurídicos de las joint ventures, sus estructuras contractuales y societarias así como su tratamiento en derecho de la competencia, que se abordan tradicionalmente en estudios separados, e insistir en la interelación existente entre las diversas ramas del derecho afectadas. Este estudio se concentra esencialmente en las cuestiones planteadas por las joint ventures en el ámbito del derecho de las obligaciones y del derecho societario.El jurista profesional desempeña, en primer lugar, una función de naturaleza organizativa, creando un conjunto de reglas obligatorias (reglas jurídicas) para todas las empresas participantes en la operación, de acuerdo con sus intereses estratégicos. El resultado puede ser, por ejemplo, la conclusión de un simple contrato, la constitución de una AEIE o la de una sociedad de capital. La complejidad de la organización jurídica de la joint venture impide estudiar de manera separada, como dos piezas aisladas, el llamado acuerdo de base de la joint venture por un lado, y la sociedad eventualmente constituida, la llamada filial común, por otro. El hecho de no entender la filial común como parte de un todo unitario y más complejo no permite describir correctamente las especialidades del régimen aplicable a dicha sociedad frente a sociedades constituidas en otros contextos económicos. La organización compleja de las joint ventures se diferencia de otros negocios jurídicos complejos por razón de su finalidad económica específica, la de establecer una alianza entre empresas. Tal como indica el derecho comunitario de la competencia, la joint venture es una operación en la que: (i) participan dos o más empresas independientemente activas en el mercado; (ii) se agrupan recursos necesarios al desarrollo de una actividad económica común en el seno eventualmente, pero no obligatoriamente, de una entidad separada (la llamada empresa común"); (iii) las empresas participantes ejercen un control conjunto sobre dicha actividad económica común. Estos tres elementos forman el núcleo de la definición de la joint venture en derecho.La cuestión de la validez y eficacia jurídica de los pactos presentes en el contrato complejo de joint venture, cuando implica la existencia de una sociedad de capital, es la que más dificultades plantea. El problema respecto a la joint venture, como respecto a muchos otros contratos complejos, es organizar un discurso sobre el uso de la libertad y sus consecuencias en el ámbito del derecho de sociedades.Mientras el jurista profesional organiza la joint venture, atrae también la atención del legislador sobre las necesidades jurídicas de las empresas que deciden "aliarse" en el seno de una joint venture. Los pactos presentes en los contratos complejos de joint venture no dependen únicamente del contenido del derecho aplicable a la sociedad "filial común" por ejemplo, sino también de la creatividad de los juristas profesionales. Las finalidades a cubrir por el contrato lo serán en regla general mediante combinaciones originales y complejas de mecanismos jurídicos, demostrándose una vez más el papel relevante de la práctica en la formación del derecho. Como consecuencia, puede observarse una tendencia a la flexibilización del derecho aplicable a las sociedades de capital, sobre todo en los países europeos continentales. Esta adaptación del derecho a la realidad práctica se observa también, y de manera significativa, en otras ramas del derecho, como en derecho de la competencia donde el legislador intenta introducir un tratamiento cada vez más pragmático de los efectos producidos por las joint ventures sobre los mercados. El análisis de la organización jurídica de las joint ventures en la práctica demuestra, sin embargo, la falta de utilidad y de oportunidad de una ordenación legal de la joint venture como tal en Europa. Como en el caso de la organización de la empresa, basta con que los operadores "candidatos" a la alianza encuentren en el derecho positivo los legal tools, o instrumentos jurídicos, adaptados a los objetivos económicos legítimos que persiguen ( por ejemplo, diversas formas sociales, la AIE, la UTE, la cuenta en participación etc), y sobre la base de los cuales puedan conservar y reforzar el sentimiento de confianza que necesitan tener en la operación y en su "aliado" para alcanzar con éxito estos objetivos. / This study provides a comprehensive analysis of both practical and theoretical legal issues raised by joint ventures in Europe. In the European Union member states and especially in Spain, joint ventures are viewed as a high efficient strategic operation - allowing alliances between firms, which may improve their competitiveness and adapt them to the growing dimensions of European markets and to the new global economy. Joint ventures are not organised as such by any statute law in Europe. European law focuses on the analysis of the effects they may produce on competition. Joint ventures obtain a legal content only in practice.The aim of this study is to define the "added value" of the practical work of lawyers, when they take part in processes of creation of joint ventures. This question allows to integrate the analysis of different legal aspects of joint ventures - their contractual and corporate structure as well as their legal treatment under competition law - which are traditionally treated in separate studies, and to point out the existence of on-going interfaces between them. This study focuses essentially on the contractual and corporate aspects of joint ventures. Practitioners set up, first of all, mechanisms which are compulsory - i.e. legal rules - for the firms involved in the operation according to their strategic interests. The result may be, for instance, the creation of a mere "contractual joint venture", of an European Economic Interest Grouping, or the incorporation of a "joint venture company". The complexity of the joint venture legal organisation prevents from studying separately the so-called "joint venture agreement" on which is based the operation, and the company which may be incorporated within it. The joint venture company is only a part of a more complex ensemble, which needs to be understood as such in order to be correctly analysed.The complex legal organisation of joint ventures differs from any other complex legal organisations because of its specific purpose, ie. establish a strategic alliance between firms. It aims to organise an operation in which: (i) participate two or more firms independently active on the market; (ii) are gathered the resources necessary to carry out a common business activity, possibly but not obligatory within a separate entity; and (iii) the participating firms jointly control the common business activity. Those three features are at the basis of the legal definition of joint ventures.The question of the legal validity and efficiency of the terms and conditions present in incorporated joint venture agreements is the more problematic one for the practitioners. The main difficulty in relation with joint ventures like in relation with many other complex agreements is to determine the limits of use of contractual freedom in company law.While organising the operation, the practitioners are also drawing the attention of the legislator on the legal needs of the firms willing to enter into alliances. The terms and conditions present in joint venture agreements depend not only on the content of the statute law applicable to the joint venture company for example, but also on the creative skills of the practitioners. The joint venture agreement needs to cover different purposes generally through original and complex combinations of legal mechanisms, proving once again the relevant role of practice in the generation of law.As a result, it is possible to observe a certain "flexibilization" of the rules in company law, especially in continental Europe. This new tendency develops in parallel with the movement observed in competition law towards a more realistic and pragmatic analysis of joint venture effects on the markets.The analysis of the legal organisations of joint ventures existing in practice demonstrates however the lack of necessity for a statutory regulation of this (strategic) operation in Europe. Like in the case of the organisation of a firm, the economic players willing to enter into strategic alliances only need to find in statute law different "legal tools" which may adapt their legitimate economic interests - such as different company forms, the Economic Interest Grouping, the partnership - and on the basis of which they can conserve and reinforce the confidence they need to have in their partner and in the operation in order to achieve successfully their purposes.

L'objectif de cette thèse est d'analyser le système juridique français et brésilien concernant les stratégies de défense contre les offres publiques d'acquisition visant à prendre le contrôle des sociétés cotées en bourse. Les offres publiques d'acquisition font l'objet d'un vif débat, plus particulièrement lorsqu'elles présentent un caractère hostile pour la société cible. En France, de nombreux efforts législatifs ont été mis en œuvre en vue d'encadrer les OPA et de lutter contre les prises de contrôle rampantes. L'analyse du droit positif permet de mettre en lumière ces différents efforts ainsi que leur mise en œuvre à travers diverses techniques par les sociétés visées. Grâce à l'analyse juridique des stratégies anti-OPA en France, le système brésilien peut prendre connaissance de cette expérience et trouver la meilleure approche juridique pour les sociétés cotées ayant un capital flottant important. Au Brésil, la récente vague d'IPO a été possible grâce à la réforme dans la bourse BM&FBOVESPA. Dorénavant, la BM&FBOVESPA présente le scénario idéal pour prendre le contrôle des sociétés cotées. Ainsi, l'importance de ce thème est le résultat de la dispersion de l'actionnariat après la première vague d'introduction en bourse dans le marché de capitaux brésilien, et en France, elle se traduit par l'évolution dans environnement légal des défenses anti-OPA face à des pratiques qui ne cessent d'évoluer. / The objective of this thesis is to analyse the French experience and the Brazilian legal environment concerning the defense strategies against hostile corporate takeovers aimed at taking control over public companies. Through the analysis of the French legal system of the anti-takeover strategies, the Brazilian system will be able to acquire this experience and find the best legal approach for Brazilian public companies with dispersed ownership. The importance of this theme is the result of the ownership dispersion following the first IPOs in the current Brazilian securities exchange market, which provides the ideal scenario for taking control of these publicly-traded companies, as well as the changes and the evolution in the French legal environment.