USPTO Patent & Trademark MCP Server

A FastMCP server for accessing United States Patent and Trademark Office (USPTO) patent and trademark data through multiple APIs including the Patent Public Search API, the Open Data Portal (ODP) API, PTAB API v3, the TSDR trademark status API, and USPTO trademark search. Using this server, Claude Desktop can pull data from USPTO APIs, search through PTAB proceedings and decisions, research prosecution history, run trademark clearance searches, track trademark status, and more:

For an introduction to MCP servers see Introducing the Model Context Protocol.

Special thanks to Parker Hancock, author of the amazing Patent Client project, for blazing the trail to understanding of the string of requests and responses needed to pull data through the Public Search API.

Features

This server provides 61 tools across 9 USPTO data sources (36 active, 25 unavailable due to API shutdowns):

1. Patent Search - Full-text search of granted patents and published applications via PPUBS

2. Full Text Documents - Get complete text of patents including claims, description, and specification

3. PDF Downloads - Download patents as PDF files (Claude Desktop doesn't support this as a client currently)

4. Prosecution History - Access transactions and file wrapper data via ODP

5. Patent Family Data - Continuity information, foreign priority, and related applications

6. Bulk Datasets - Search and access USPTO bulk data products including PatentsView disambiguated data

7. Trademark Search - Full-text search of US federal trademarks by mark text, owner, goods/services, and class (clearance/knockout searches)

8. Trademark Status & Documents - Authoritative live status, prosecution documents, and mark images via TSDR

9. Trademark Assignments - Recorded ownership transfer records from 1955 to present (no API key needed)

Note on unavailable APIs: The PatentsView API (search.patentsview.org) was shut down on March 20, 2026, with its data migrated to ODP bulk datasets. The Office Action and Enriched Citation APIs (developer.uspto.gov) were decommissioned in early 2026. The Patent Litigation API is not offered on the USPTO Open Data Portal; litigation data is available as a bulk download. All 25 affected tools remain registered and return helpful workaround guidance pointing to alternative tools.

Related MCP server: USPTO Patent Citation MCP Server

API Sources

Prerequisites

• Python 3.10-3.13 (3.12 recommended)

• Claude Desktop (for integration). Other models and MCP clients have not been tested.

• UV for Python version and dependency management

If you're a Python developer but still unfamiliar with uv, you're in for a treat. It's faster and easier than having a separate Python version manager (like pyenv) and setting up, activating, and maintaining virtual environments with venv and pip.

If you don't already have uv installed:

curl -LsSf https://astral.sh/uv/install.sh | sh

Installation

1. Clone this repository:

   git clone https://github.com/riemannzeta/patent_mcp_server
   cd patent_mcp_server

2. Install dependencies with uv:

   uv sync

3. Verify installation:

   uv run patent-mcp-server

   Should output:

   INFO     Starting USPTO Patent MCP server with stdio transport

API Key Setup

USPTO ODP API Key (Required for most tools)

To use the api.uspto.gov tools (ODP, PTAB), you need an Open Data Portal API key. Without it, these endpoints return 403 Forbidden. The Patent Litigation API is not offered on ODP and does not require an API key.

1. Create a USPTO.gov account at data.uspto.gov (requires ID.me verification)

2. Once signed in, visit "My ODP" in the site navigation to get your API key

3. See the Getting Started guide for detailed instructions

4. Create a .env file in the patent_mcp_server directory:

   USPTO_API_KEY=your_actual_key_here

   Note: The PPUBS patent tools, trademark search (tm_* search tools), and trademark assignment search work without any API key.

TSDR API Key (Trademark status/document tools)

The TSDR tools (tsdr_*) require a TSDR-specific API key sent as the USPTO-API-KEY header. The ODP key does not work for TSDR — it passes the gateway's auth check, but every request then fails with BACKEND RESPONSE STATUS: 404.

1. Sign in to the USPTO API Key Manager with a free MyUSPTO account

2. Select the TSDR API product and click "Request API key" (the key is emailed and stored under your account)

3. Add it to your .env:

   TSDR_API_KEY=your_tsdr_key_here

TSDR rate limits (peak hours 5am-10pm ET): 60 requests/minute general, 4 requests/minute for PDF document bundles (120/12 off-peak). Use tsdr_list_trademark_documents (metadata only, not rate-limited like PDFs) before downloading bundles.

Trademark search and AWS WAF (no key needed)

tm_search_trademarks / tm_get_trademark use the internal API behind tmsearch.uspto.gov, which sits behind AWS WAF. It currently answers plain requests, but if USPTO tightens the WAF and searches start failing with 403/202 errors, copy the aws-waf-token cookie from a browser session on tmsearch.uspto.gov (valid ~4 days) and set:

TMSEARCH_WAF_TOKEN=your_cookie_value_here

Configuration

The server can be configured using environment variables in your .env file. All settings are optional with sensible defaults:

# API Keys
USPTO_API_KEY=your_key_here      # ODP/PTAB tools
TSDR_API_KEY=your_tsdr_key_here  # TSDR trademark tools (separate key — see above)
TMSEARCH_WAF_TOKEN=...           # Optional - only if trademark search hits the WAF

# Logging
LOG_LEVEL=INFO  # Options: DEBUG, INFO, WARNING, ERROR, CRITICAL

# HTTP Settings
REQUEST_TIMEOUT=30.0  # Request timeout in seconds
MAX_RETRIES=3         # Maximum number of retry attempts
RETRY_MIN_WAIT=2      # Minimum wait time between retries (seconds)
RETRY_MAX_WAIT=10     # Maximum wait time between retries (seconds)

# Session Management
SESSION_EXPIRY_MINUTES=30  # How long to cache ppubs sessions
ENABLE_CACHING=true        # Enable/disable session caching

# API Endpoints (usually don't need to change)
PPUBS_BASE_URL=https://ppubs.uspto.gov
API_BASE_URL=https://api.uspto.gov          # ODP API endpoint (NOT data.uspto.gov)
TSDR_BASE_URL=https://tsdrapi.uspto.gov/ts/cd
TMSEARCH_BASE_URL=https://tmsearch.uspto.gov
TM_ASSIGNMENT_BASE_URL=https://assignmentcenter.uspto.gov

Claude Desktop Configuration

To integrate this MCP server with Claude Desktop:

1. Update your Claude Desktop configuration file (claude_desktop_config.json):

   {
     "mcpServers": {
       "patents": {
         "command": "uv",
         "args": [
           "--directory",
           "/Users/username/patent_mcp_server",
           "run",
           "patent-mcp-server"
         ]
       }
     }
   }

   You can find claude_desktop_config.json on a Mac by opening the Claude Desktop app, opening Settings (from the Claude menu or by Command + ' on the keyboard), clicking "Developer" in the sidebar, and "Edit Config."

2. Replace /Users/username/patent_mcp_server with the actual path to your patent_mcp_server directory.

When integrated with Claude Desktop, the server will be automatically started when needed and doesn't need to be run separately.

Claude Code Configuration

To integrate this MCP server with Claude Code for a particular project, from the project root:

claude mcp add-json patents '{"command": "uv", "args": ["--directory", "/path/to/patent_mcp_server", "run", "patent-mcp-server"]}'

If you're already running Claude Code, you'll have to /exit and restart. Then /mcp to verify that it's configured.

Available Tools

Utility Tools

Patent Public Search (ppubs.uspto.gov)

Open Data Portal (api.uspto.gov)

PTAB Trial API (api.uspto.gov ODP v3.0)

TSDR - Trademark Status and Document Retrieval (tsdrapi.uspto.gov)

Trademark Search & Assignments

Note: tm_search_trademarks and tm_get_trademark use the undocumented internal API behind tmsearch.uspto.gov (the TESS replacement) — the same situation as the PPUBS patent search API. USPTO offers no official REST API for full-text trademark search. The request/response contract was verified live on 2026-06-10, but these tools may break without notice if USPTO changes the internal API. TTAB proceedings (oppositions/cancellations) have no REST API; daily TTAB XML is available as bulk datasets via odp_search_datasets.

Patent Litigation API (Unavailable — not offered on ODP, issue #16)

All 4 Litigation tools return API_UNAVAILABLE. The Patent Litigation API is not listed in the ODP Swagger catalog. The OCE Patent Litigation dataset (74,000+ district court cases) is distributed as a bulk download at https://www.uspto.gov/ip-policy/economic-research/research-datasets/patent-litigation-docket-reports-data.

PatentsView API (Unavailable — shut down March 2026)

All 14 PatentsView tools return API_UNAVAILABLE with workaround guidance. PatentsView data has been migrated to the USPTO Open Data Portal as bulk downloadable datasets. Use ppubs_search_patents for patent search, odp_search_datasets to find bulk datasets.

Office Action APIs (Unavailable — decommissioned early 2026)

All 4 Office Action tools return API_UNAVAILABLE. Use odp_get_documents to access office action documents from the file wrapper.

Enriched Citation APIs (Unavailable — decommissioned early 2026)

All 3 Enriched Citation tools return API_UNAVAILABLE. Use odp_get_documents or ppubs tools as workarounds.

Resources and Prompts

The server also provides MCP Resources (accessible via @ mentions):

• patents://cpc/{code} - CPC classification information

• patents://status-codes - USPTO status code definitions

• patents://sources - Data source information

• patents://search-syntax - Query syntax guide (patents and trademarks)

• trademarks://classes - Nice/international trademark classes (1-45)

• trademarks://status-codes - Trademark status code definitions

And MCP Prompts (workflow templates):

• prior_art_search - Comprehensive prior art search guide

• patent_validity - Patent validity analysis workflow

• competitor_portfolio - Competitor portfolio analysis (patents + trademarks)

• ptab_research - PTAB proceeding research guide

• freedom_to_operate - FTO analysis workflow

• patent_landscape - Technology landscape mapping

• trademark_clearance_search - Trademark clearance/knockout search guide

• trademark_portfolio_review - Trademark portfolio and deadline review

• trademark_status_monitoring - Trademark status and conflict watching

Testing

The project includes comprehensive test suites:

# Run unit tests (default - skips integration tests)
uv run pytest

# Run with verbose output
uv run pytest -v

# Run integration tests (requires network access)
uv run pytest -m integration

# Run all tests including integration
uv run pytest -m ""

# Run with coverage report
uv run pytest --cov=patent_mcp_server

Test results are stored in /test/test_results/.

Development

To install development dependencies:

uv sync --dev

Publishing to PyPI

# Build distribution packages
rm -rf dist/ && uv run python -m build

# Upload to PyPI
uv run twine upload dist/*

Contributing

Issues and PRs welcome. See CONTRIBUTING.md for the contribution guide, and AGENTS.md for guidance specific to AI agents. Use the bug report or feature request templates when filing an issue — they prompt for the tool call, the constructed request URL/body, and the raw API response, which is usually enough to land a fix in one turn.

Version History

v1.0.0 (Current)

• Trademark support: 9 new trademark tools across three new clients, all verified against the live USPTO services on 2026-06-10

  • TSDR (tsdr_get_trademark_status, tsdr_list_trademark_documents, tsdr_download_trademark_documents, tsdr_get_trademark_image) — official trademark status/document API. Requires a TSDR-specific key (the ODP key does not work); error responses detect the wrong-key signature and explain how to get the right one. Document bundles above 4 MB are rejected with filter guidance (full wrappers can exceed 10 MB)

  • Trademark search (tm_search_trademarks, tm_get_trademark) — full-text search by mark text, owner, goods/services, and Nice class via the internal Elasticsearch API behind tmsearch.uspto.gov (no official REST API exists). Verified live; handles AWS WAF rejections with TMSEARCH_WAF_TOKEN support

  • Trademark assignments (tm_search_assignments) — USPTO Assignment Center public API (assignmentcenter.uspto.gov, no key required), searchable by serial/registration number, assignee, assignor, and reel/frame. Replaced the legacy assignment-api.uspto.gov XML API decommissioned June 5, 2026

• New reference tools and resources: get_trademark_class_info, get_trademark_status_code, trademarks://classes, trademarks://status-codes (all 45 Nice classes, common trademark status codes)

• 3 new workflow prompts: trademark_clearance_search, trademark_portfolio_review, trademark_status_monitoring

• Fixed ppubs_download_patent_pdf (called download_image with the wrong signature, raising TypeError)

• Rewrote patent workflow prompts to reference live tools (the old prompts still pointed at decommissioned PatentsView/Office Action/citation tools)

• New env vars: TSDR_API_KEY, TMSEARCH_WAF_TOKEN, TSDR_BASE_URL, TMSEARCH_BASE_URL, TM_ASSIGNMENT_BASE_URL

• Tool count: 61 registered (36 active, 25 unavailable)

v0.9.5

• Re-enable 7 PTAB tools on USPTO ODP v3.0: ptab_search_proceedings, ptab_get_proceeding, ptab_get_documents, ptab_search_decisions, ptab_get_decision, ptab_search_appeals, ptab_get_appeal (issue #23). PTAB data relocated to ODP /api/v1/patent/trials/* and /api/v1/patent/appeals/* (paths not in the ODP Swagger UI); the standalone-API decommission (issue #16) was correct for the Patent Litigation API, but PTAB moved rather than disappeared.

• Active tool count: 27 (up from 20); unavailable: 25 (down from 32); total registered remains 52

v0.9.4

• Fix ppubs_search_patents / ppubs_search_applications query semantics (issue #21): default operator changed from OR to AND, so multi-word queries like machine learning no longer match the entire corpus and collapse into the latest-grants fallback under date_publ desc sort.

• Fix template-mutation bug in PPUBS client (search_query.copy() → copy.deepcopy(...)), eliminating a concurrency hazard between parallel calls.

• Fix odp_search_applications filters being silently ignored upstream (issue #21): switched from GET query-string params to POST with a Lucene-style q body. assignee_name, inventor_name, application_number, patent_number, and filing-date ranges are now properly AND-combined into the search. Tool now returns MISSING_FILTER rather than dumping the full 12.8M-record corpus when called with no filters.

• Updated ppubs_search_patents / ppubs_search_applications / odp_search_applications docstrings to reflect the corrected semantics and document Lucene query support on ODP.

• Added CONTRIBUTING.md, AGENTS.md, bug-report + feature-request issue templates, and a PR template.

v0.9.0

• Handle PTAB Trial API and Patent Litigation API unavailability on ODP (issue #16)

• All 7 ptab_* tools and 4 litigation tools now return API_UNAVAILABLE with workaround guidance pointing to PPUBS tools and USPTO bulk datasets

• Active tool count: 20 (down from 31); unavailable: 32 (up from 21); total registered remains 52

• Added unit tests for all 11 newly-unavailable tools and extended the shared error-structure parametrization

• Updated check_api_status, resources.py data sources, client docstrings, and README to reflect the shutdown

v0.8.0

• Handle decommissioned PatentsView API (shut down March 20, 2026)

• All 14 patentsview_* tools return API_UNAVAILABLE with workaround guidance

• Fixed circular references in office_actions resources that pointed to unavailable PatentsView tools

• Updated API Sources table, configuration, and documentation

v0.7.0

• Handle decommissioned Office Action and Enriched Citation APIs (developer.uspto.gov)

• All 7 affected tools return API_UNAVAILABLE with workaround guidance

• Added test/unit/test_unavailable_tools.py for decommissioned tool testing

• Code cleanup: removed dead code, improved docstrings

v0.6.2

• Updated API key registration instructions: keys are now obtained from data.uspto.gov ("My ODP")

• Clarified that api.uspto.gov is the correct API endpoint (not data.uspto.gov which is the web portal)

• Noted PTAB API v3 migration to ODP and Office Action API migration (early 2026)

v0.6.1

• Added PatentsView attorney search tools (patentsview_search_attorneys, patentsview_get_attorney)

• Added PatentsView IPC classification tools (patentsview_lookup_ipc, patentsview_search_by_ipc)

• Fixed bug in search_publications method (pagination options not being passed)

v0.6.0

• PyPI release preparation

v0.5.0

• Focused on USPTO-only data sources

• Renamed ODP tools with odp_ prefix for clarity

• Improved function signatures (using query instead of q)

v0.3.0

• Added 33 new tools (PTAB, PatentsView, Office Actions, Citations, Litigation)

• Rate limiting support for PatentsView API

• Comprehensive async client architecture

v0.2.2

• Centralized configuration with environment variables

• Standardized error handling

• Input validation with Pydantic

• Retry logic with exponential backoff

• Session caching for PPUBS

License

MIT