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

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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 · May 11–15, 2026

AI Mode arrives and advanced search gets its own home.

Note from the developers

A new AI Mode chat workspace grounded in the patent, advanced search moved to a dedicated page, and prosecution-document analysis got better.

New
AI Mode chat
Added an AI Mode chat workspace with grounded retrieval over the patent.
Learn more →
New
Dedicated advanced search page
Moved advanced search to its own page.
Learn more →
Improved
Prosecution analysis
Improved prosecution document analysis and figure OCR.
Learn more →
Improved
Mobile chat
Reworked mobile chat layout and on-plan usage display.
Improved
Plans
Invention analysis moved to Plus access; paid-plan pricing updated.
Learn more →

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