Under Article 2.1 of the TRIPS Agreement, in respect of Parts II, III and IV of the Agreement, WTO…

Article 2.1 of TRIPS obliges Members, for Parts II, III and IV, to comply with "Articles 1 through 12, and Article 19" of the Paris Convention (1967), so even a WTO Member that never joined the Paris Union is bound by its substantive rules. "Articles 1 through 21 and the Appendix" is the formula Article 9.1 uses for the Berne Convention, not for Paris. The administrative and final clauses of Paris (Articles 13 to 30, other than Article 19) are not incorporated.