2. 1 retrieval of patent application for invention The retrieval in the substantive examination procedure of patent documents is mainly carried out in the retrieval of patent documents. The patent documents retrieved mainly include: multinational patent documents in electronic form (computer consulting databases and CDs); Paper retrieval documents for examination arranged by international patent classification number and national patent documents arranged by serial number; Patent documents of various countries in microfilm form. Patent documents in electronic form in Patent Office mainly include: China patent application disclosure specification, China invention patent specification, China utility model patent specification, European patent application disclosure specification, patent cooperation treaty international patent application disclosure specification, American patent specification, Japanese patent application disclosure specification, Japanese utility model patent specification and multinational patent classification abstract, etc. Patent documents in paper form in Patent Office mainly include: China Patent Application Disclosure Specification, China Invention Patent Disclosure Specification, China Utility Model Patent Specification, American Patent Specification, European Patent Application Disclosure Specification, Patent Cooperation Treaty International Patent Application Disclosure Specification and multinational patent classification abstract, etc.
2.2 Non-patent literature retrieval examiners should consult non-patent literature for retrieval in addition to searching in patent literature. Non-patented literature for retrieval mainly includes domestic and foreign scientific and technological books, periodicals, indexing tools and manuals in electronic or paper form.