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

About Patent Bear

The patent workspace
you’ve been waiting for.

The full patent record, in your browser or inside Claude, ChatGPT, and Gemini. Search US and European patents, read file histories and court decisions, annotate and chart claims, and run research analyses, all cited back to the record.


Built by a practitioner

Made for patent professionals,
by a patent professional.

Patent Bear was founded by Ronald A. Lee, a patent litigator who spent his career at some of the largest law firms in the United States, including Gibson, Dunn & Crutcher; Willkie Farr & Gallagher; and Fitzpatrick, Cella, Harper & Scinto. Admitted to practice in New York and California and registered to practice before the U.S. Patent and Trademark Office, he built Patent Bear to solve the frustrations that come with reading, searching, and analyzing patents every day. It’s the tool he always wished he had.

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The mission

One platform for the entire
patent workflow.

From first search to final analysis: search, read, annotate, and collaborate in one place, or bring the whole record into the AI you already use.

Learn more →
Features

Everything you need to analyze patents.

The full patent record, in your browser or inside Claude, ChatGPT, and Gemini. Search US and European patents, read file histories and court decisions, annotate and chart claims, and run research analyses, all cited back to the record.

  • 01Inside Your AI

    Connect Patent Bear to Claude, ChatGPT, or Gemini and ask in a sentence. Your assistant searches, reads the issued text, and answers with every quote cited to the column and line.

    Standard MCP with OAuth. Claude, Claude for Work, ChatGPT, Gemini, and Codex, in about two minutes per user.

  • 02Patents, Publications & Applications

    Search millions of US and European patents and publications by owner, inventor, CPC, dates, and claim text. Look up any US application with its full prosecution history, always free.

    Claims in their operative form after reexamination and PTAB certificates, with term, maintenance-fee status, and current ownership. Download prosecution documents individually or merged into a single PDF.

  • 03Beautiful Reading Experience

    Patents deserve better than the USPTO website. Properly formatted claims with nesting, structured sections, and a table of contents.

    Adjustable font sizes, content width preferences, column-line citations, and print-optimized layout.

  • 04Highlights & Annotations

    Mark up patents with color-coded highlights, save claim terms, and add notes to figures. Everything persists across sessions.

    10 colors, per-claim term tracking with occurrence counts, and a full annotation panel.

  • 05Court Decisions & PTAB

    Search district court, Federal Circuit, and Supreme Court decisions by patent, party, judge, issue, or doctrine, and read them in the same reader. See IPR, PGR, and CBM challenges on any granted patent with the full trial docket.

    Open any patent and the decisions that ruled on it are already there, with the ground and the claims involved.

  • 06Examiner & Judge Profiles

    See how an examiner has handled applications in an art unit, or how a judge has ruled on an issue, built from the office actions and decisions themselves.

    Useful for planning a response, choosing a venue, or setting a client's expectations.

  • 07AI Patent Chat

    Ask questions about any patent in plain English. Get cited answers that link directly to the relevant claims, paragraphs, and figures.

    Zero data retention at every AI provider we use. Nothing you send is used to train a model.

  • 08Research Analyses

    Run prior-art searches with element-by-element claim charts, invention screens, §112 disclosure checks, and freedom-to-operate scans, started in a sentence from the site or from your AI and cited back to the record.

    Prior Art, Charting, Disclosure, Invention, and Clearance, plus structured search across sequences, chemical structures, and citations.

  • 09Claim Charts

    Break claims into preamble and individual elements. Add notes alongside each element. Export to Word for briefs or client reports.

    Automatic element parsing: [1Pre], [1a], [1b], [1c]. Edit to refine. Duplicate charts for the same patent.

  • 10Library & Matters

    Keep saved patents, annotations, claim charts, documents, and analysis runs together, organized by client and matter.

    Everything you save lives in one workspace you can return to, filter by matter, and share with your firm.

  • 11Firm Collaboration

    Share annotations across your firm. Everyone sees the same highlights, notes, and saved terms. No more emailing screenshots.

    Firm plans with per-seat pricing, admin controls, and email invites.

  • 12Your Data Stays Private

    Your queries, documents, and annotations stay yours. Every AI provider Patent Bear uses is bound not to keep what it is sent, and nothing is used to train a model.

    Each user signs in with their own account and sees only their own work.

Ready to try it?

Search any US patent for free.

No account required. Sign up to save patents, annotate claims, chat with AI, and connect Patent Bear to Claude or ChatGPT.

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