The project (research theme) investigates the tools and the aims of the applied science called horizontal comparison of private laws. The project applies the tools thereof in the field of lawmaking and the application of law by courts and nonetheless by the market players as well. A so-called complex horizontal private law comparison issues a total or partial combination of these fields’ analyses between Continental Laws and/or Anglo-Saxon Regimes and/or Mixed Jurisdictions inside and outside Europe. The complex comparative analyses target the investigation of the socio-economic setting, the normative and jurisprudential background, the court casuistic and the market practice of legal institutions within the branch of Law of Persons, Law of Rights in Rem, Law of Obligations (Contracts, Torts etc.) and Law of Succession as well. This project aims the research of vertical (i.e. historical) comparison of laws merely collaterally.