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 · Feb 19–20, 2026

Patent Bear is born — search, reading, and annotations.

Note from the developers

The first release: patent search and a proper reading experience, with a highlight-and-annotation system, claim-term navigation, and a scroll-spy table of contents.

New
Patent Bear launches
First release: patent search and reading.
Learn more →
New
Highlight & annotation system
Term navigation, color picker, and table-of-contents scroll-spy in the reader.
Learn more →

Feb 23–27 →