The first Hungarian Act on Patents was adopted in 1895. The study examines the regulation of the inventor’s legal status in this act and the problems the legislature had to solve. In the first part of the study the inventor’s rights are described regarding the inventor’s personal and valuable rights and interests. By the beginning of the 20th century license became the most important valuable right and interest, although its regulation could not be found in any act. In fact, a decision of the Patent Court in 1928 declared the regulation of leasehold valid, which raised greater and greater difficulties in legal application from the second half of the 20th century. The second part of the study examines the inventor’s obligation of payment and functioning. The latter is one of the special features of the intellectual property system which is regulated by the Industrial Property Union.