Access Range: Unrestricted

This resource provides comprehensive navigation services for domestic and international patent information resources, including retrieval systems and databases.

1. Commonly Used Chinese Patent Document Retrieval Systems and Databases:

(1) State Intellectual Property Office Patent Search and Service System (Official)

Retrieval Functions: Conventional search, form search, drug-specific search, search history, search result browsing, document browsing, batch downloading, etc.

Analysis Functions: Quick analysis, customized analysis, advanced analysis, analysis report generation, etc.

Data Coverage: Includes patent data from 103 countries, regions, and organizations, as well as citation, patent family, and legal status data. Covers China, United States, Japan, South Korea, United Kingdom, France, Germany, Switzerland, Russia, European Patent Office (EPO), and World Intellectual Property Organization (WIPO).

Data Updates: Chinese and foreign patent data updated every Wednesday; patent family and legal status data updated every Tuesday; citation data updated monthly.

(2) China Intellectual Property Net Patent Information Service Platform

Details: The CNIPR Chinese-Foreign Patent Database Service Platform incorporates advantages of domestic and international advanced patent retrieval systems, developed using advanced full-text search engine technology. Primarily provides retrieval services for Chinese patents and foreign patents (including United States, Japan, United Kingdom, Germany, France, Canada, EPO, WIPO, Switzerland, and 98 other countries and organizations).

(3) Full-text Databases with Patent Retrieval Capability:

① CNKI Patent Search

Details: Includes three sub-databases: invention patents, utility model patents, and design patents, accurately reflecting China's latest patent inventions. Patent-related documents and achievement information sourced from various CNKI databases. Searchable by application number, application date, publication number, publication date, patent name, abstract, classification number, applicant, inventor, priority, etc., with full-text patent specifications available for download.

Data Source: Intellectual Property Publishing House of State Intellectual Property Office.

Patent Classification: International Patent Classification (IPC) and CNKI 168 subject classification for inventions and utility models; international design classification and CNKI 168 subject classification for designs.

Coverage Period: Chinese patents from 1985 to present.

Collection Size: Over 4.5 million patents as of October 2010.

Update Frequency: Biweekly updates.

② Wanfang Patent Search

Details: The Chinese-Foreign Patent Database includes Chinese patent documents and foreign/international organization patents, covering domestic and foreign inventions, utility models, and designs across natural science disciplines. An essential information resource for scientific institutions, enterprises, research institutes, universities, and individuals for patent information consultation, patent applications, scientific research, technology development, and science education.

Content Coverage: Patent information from seven countries and two organizations (China, US, Japan, Germany, UK, France, Switzerland, EPO, and WIPO); patents from 1985 to present.

Resource Collection: Full-text resources. Approximately 250,000 new records added annually. Chinese patents updated biweekly, foreign patents updated quarterly.

Navigation: IPC International Patent Classification.

Features: Massive data storage; uses internationally standardized IPC classification for efficient organization, management, and retrieval; simple and professional advanced search modes; searchable by patent name, abstract, application number, application date, publication number, publication date, main classification number, classification number, applicant, inventor, applicant address, agency, agent, priority, country/province code, claims, patent type, etc.; search results automatically clustered by IPC classification, publishing country/organization, and application date; provides related patents, papers, and search terms based on selected patents.

(4) Search Engines:

① Baidu Patent Search

Details: Launched January 1, 2008. Data provided by China Patent Information Center of State Intellectual Property Office, including all registered Chinese patent information. Provides basic patent bibliographic items: patent name, application number, abstract, application date, publication date, applicant/patentee, inventor, patent agency, patent type, etc.

② SooPat Search Engine

Details: SooPat is a patent data search engine (Soo = "search", Pat = "patent"). Committed to "facilitating patent information access" and creating the most powerful, professional patent search engine. Does not provide data itself but links and integrates free patent databases from the internet with user-friendly adjustments. Highly integrated with Google, leveraging familiarity with Google search.

Data Sources: Chinese patent data from State Intellectual Property Office internet retrieval database; foreign patent data from various national official websites. Free retrieval without registration, with full-text browsing and downloading. Registered members can save search history and personalize settings.

③ INNOJOY

Details: INNOJOY patent platform, developed by Baoding Dawei Company, is a comprehensive semi-public welfare patent information utilization platform offering Chinese and English bilingual patent search, online analysis, regular alerts, and machine translation. Covers Chinese patents (inventions, utility models, designs) and patents from 30+ major countries and organizations (including US, Japan, UK, Germany, France, EPO, WIPO, Switzerland).

2. Foreign Patent Document Retrieval Systems and Databases:

(1) National Intellectual Property Websites (Free)

① United States Patent and Trademark Office (USPTO) Online Patent Search Database

Details: Divided into two parts: 1) All authorized US patent specification images published since 1790 (full-text coded since 1976); 2) All published (unauthorized) US patent application specification images since March 15, 2001. Database updated weekly on publication day (Tuesday).

② WIPO Online Patent Search Database

Details: Includes all published PCT application specification image pages since January 1997. Pre-1997 specifications available through EPO's "Worldwide" search. Registration required before searching. Updated weekly (Thursday) with bibliographic items and abstracts; images added 14 days after publication.

③ European Patent Office (EPO) Online Patent Search Database

Details: Covers 59+ million patents from 72 countries. Start dates vary by country/organization; patent specifications stored as images. Free access meets general public needs. Established in 1998 by EPO, EPO member states, and European Commission (Espacenet website).

(2) Commercial Patent Database: Derwent Patent Database (DPCI)

Details: Derwent Patents Citation Index by Thomson Reuters contains bibliographic information, including cited and citing references for nearly 10 million patent families. References include inventor and examiner citations from patent and non-patent literature. View references from over 22 patent offices by patent family. Examiner citations from Belgium, EPO, France, Germany, Japan, Netherlands, Spain, UK, US, and WIPO/PCT. Coverage: 1973-present.

(3) Search Engine: Google

(4) Dialog