Answer: According to their different adjustment contents, international intellectual property conventions can be roughly divided into the following four categories:

(1) General treaty, namely the "Convention Establishing the World Intellectual Property Organization".

(2) Conventions on the protection of intellectual property rights, such as the Paris Convention for the Protection of Industrial Property, the Berne Convention for the Protection of Literary and Artistic Works, the Universal Copyright Convention, the Protection of Producers of Phonograms from Convention on the unauthorized reproduction of their phonograms, etc.

(3) Conventions related to the establishment of an international registration system for intellectual property rights, such as the Madrid Agreement on the International Registration of Trademarks, the Protocol Relevant to the Madrid Agreement on the International Registration of Trademarks, the Patent Cooperation Treaty, etc.

(4) Conventions on international classification of intellectual property rights, such as the Nice Agreement on the International Classification of Goods and Services for the Purpose of Trademark Registration.