According to the Art. 86c para. 1 point 1 of the Act of Higher Education Law of 27 July, 2005 a senate of the higher education institution passes the Rules on management of copyright, related rights and industrial rights and Principles of their commercialization. Although that the Act does not impose an obligation on higher education institutions to define the notion of “scientific work”, all of them decided to define it. Thus an author analyses 25 definitions of “a scientific work” which are included in the Rule of the 25 different higher education institution. The author comes to conclusion that the definitions included in 25 different Rules are not fully compatible with an Act of 4 February, 1994 on Copyright and Related Rights. Thus it is recommended to consider the analyzed definitions independently from the Act on Copyright and Related Rights and to take into consideration some specific aspects of the profile of a higher education institution.