Whether you’re researching prior art, verifying publication data, or retrieving official PDF copies, the following resources provide authoritative access to patent publications worldwide.
United States Patent & Trademark Office (USPTO)
Official U.S. sources for patents and pre-grant publications.
Patent Public Search (PPUBS) ➚
Browse and download official PDF copies of U.S. patents and published applications.
- Ideal for quick retrieval of official publication PDFs
- No login required
- Supports publication numbers (e.g.,
US20240123456A1) and patent numbers (e.g.,US12345678B2)
Patent Center ➚
The official portal for filing, managing, and monitoring patent applications.
- Requires a USPTO.gov account
- Combines Public PAIR and EFS-Web functionality
- Includes application status, file wrappers, and document downloads (for your own cases)
Office of Data Products (ODP) ➚
Access bulk data files including patent bibliographic data, assignments, citations, and full-text XML.
- Useful for research and analytics
- Updated regularly by USPTO’s Chief Data Office
USPTO Assignment Search ➚
Track the ownership and transfer history of U.S. patents and applications through the USPTO Assignment Search system.
This database records all assignments, mergers, security interests, and ownership changes filed with the Office under 35 U.S.C. § 261.
You can search by patent number, application number, assignee name, or assignor name to verify current ownership or review transaction history.
PTAB TACTS ➚
The Patent Trial and Appeal Case Tracking System (P-TACTS) provides public access to appeal and trial proceedings related to U.S. patents and applications.
Users can view inter partes reviews (IPRs), post-grant reviews (PGRs), covered-business-method (CBM) cases, and ex parte appeals, along with decisions, filings, and scheduling information.
P-TACTS helps monitor how patents are interpreted, appealed, or challenged after grant.
International and Foreign Sources
USPTO Global Dossier ➚
Authoritative cross-office access to related patent applications filed under the Patent Cooperation Treaty (PCT) or in participating IP5 offices (USPTO, EPO, JPO, KIPO, CNIPA).
- No login required
- Displays global family documents, office actions, and correspondence
- Excellent for tracking prosecution across jurisdictions
WIPO PATENTSCOPE ➚
Search international (PCT) applications and national collections from over 70 patent offices.
- Free full-text search in multiple languages
- Includes English machine translations
- Provides access to PDF copies, legal status, and family data
EPO Espacenet ➚
European Patent Office’s public patent search service.
- PDF access often via the originating office
- Covers more than 140 million patent documents worldwide
- Includes bibliographic data, family links, and citation maps
Google Patents ➚
Aggregated database covering USPTO, WIPO, EPO, and other national offices.
- Fast, user-friendly search interface
- Shows citation networks, family data, and machine translations
- Links directly to original office PDFs where available
Major Foreign Patent Offices
| Region | Office |
|---|---|
| Canada | Canadian Intellectual Property Office (CIPO) |
| United Kingdom | UK Intellectual Property Office (UKIPO) |
| Europe | European Patent Office (EPO) |
| Germany | DPMA DEPATISnet |
| France | INPI Patent Database |
| Japan | J-PlatPat (JPO) |
| Korea | KIPO KIPRIS |
| China | CNIPA Patent Search |
| India | Indian Patent Advanced Search System (InPASS) |
| Australia | IP Australia Patents |
Need to download these documents in bulk? Try PatPDFs.”