Patent Bear insideClaude,ChatGPT and Codex,and Gemini.

Search, Research, Draft, and Library, as tool calls in your agent. Listed in the Claude connector directory. Connect now

Search

Free

Patent search
US and EP grants, publications, and applications, full text.
Advanced search
Assignee, inventor, classification, dates, citations.
Cases
District court and Federal Circuit decisions, readable page by page.
PTAB
Board decisions in IPR, PGR and CBM trials by outcome, denial basis, panel and petitioner.
Reader
Claims, specification, figures, and highlights on the issued PDF, cited col:line.
Sequence and chemistry
DNA, RNA, and protein by homology. Chemistry by substructure or similarity.
File histories
Any application with its prosecution history, free. Download documents one at a time or merged.

Research

Analyses

All of Research

Draft

From the record

All drafts, including what is in build

Library

Yours, private

Open the Library

Update · Mar 2–6, 2026

Google sign-in, bulk saved patents in folders, and a 4M+ patent sitemap.

Note from the developers

Google sign-in, bulk saved patents with folders, a sitemap covering 4M+ patents, and a round of mobile and security hardening.

New
Google sign-in
Added Google OAuth sign-in.
New
Bulk saved patents
Bulk-add saved patents with folders and color picker.
Learn more →
Improved
Mobile & Safari
Mobile optimization and iOS Safari selection fixes.
New
Sitemap & hardening
Sitemap covering 4M+ patents, security headers, and rate limiting.

← Feb 23–27 Mar 9–13 →