The 2025 edition of this preeminent work—the only regularly updated authoritative article-by-article commentary in English on the European Patent Convention (EPC), its implementing regulations, and associated case law—provides the complete text of the law annotated with commentary and expert guidance on the interpretation of each paragraph. Since its first edition in 1994, it has provided the European patent community with the necessary insights to practice successfully before the European Patent Office. The EPO recommends the Visser’s Annotated European Patent Convention as the first book in its list of non-EPO/WIPO literature to be used for the preparation of the European qualifying examination.