# mpep.io

> The USPTO Manual of Patent Examining Procedure (MPEP), Ninth Edition,
> Revision 01.2024, as structured data: every section, its cited cases
> (with AI-generated holding summaries), statutes, cross-references, and
> examiner form paragraphs. Pinned, hash-verified corpus (mpep-e9r01-2024-html).
> Source texts are public domain; the structured data is proprietary —
> see https://mpep.io/terms. Not an official USPTO site.

Coverage: all 736 sections are served;
425 are schema-annotated ("structured": typed
citation edges, verified quotes, cited-authority digests). The rest are
cleaned source text ("source"), pending annotation. Responses flag which
kind you are reading.

Case holding summaries are AI-generated from each case's MPEP citation
contexts and carry a confidence level (high/medium/low) — verify before
citing them in filings.

## USPTO guidance issued after the pinned revision

The MPEP is not all of current practice. The USPTO changes examination
policy between revisions through documents that never alter the published
manual: advance notices of change to the MPEP, Director/Commissioner
memoranda, Federal Register guidance updates, subject-matter-eligibility
example sets, and precedential Board decisions (e.g. the 2024 AI eligibility
update, the 2025 §101 memos, Ex parte Desjardins). 18 such
documents are pinned by SHA-256 and served with the sections they amend
flagged (https://mpep.io/guidance; MCP tools list_guidance / get_guidance;
REST GET /v1/guidance on api.mpep.io). Read the guidance before treating an
amended section's text as current — especially for 35 U.S.C. 101.

- 2026-04-30 — Best Practices for Submission of Rule 132 Subject Matter Eligibility Declarations (SMEDs) (memorandum) — https://mpep.io/guidance/memo-smed-practitioners-2026-04-30
- 2025-12-05 — Advance Notice of Change to the MPEP in Light of Ex parte Desjardins (advance_notice) — https://mpep.io/guidance/anc-desjardins-2025-12-05
- 2025-12-04 — Memorandum to the Patent Examining Corps — Subject Matter Eligibility Declarations (memorandum) — https://mpep.io/guidance/memo-smed-corps-2025-12-04
- 2025-10-24 — Advance Notice of Change to the MPEP to provide guidance on the use of PE2E Search's Similarity Search feature (advance_notice) — https://mpep.io/guidance/anc-similarity-search-2025-10-24
- 2025-10-24 — Advance notice of change to the MPEP with respect to false assertions or certifications of entity status (advance_notice) — https://mpep.io/guidance/anc-entity-status-2025-10-24
- 2025-09-26 — Ex parte Desjardins, Appeal 2024-000567 (Appeals Review Panel, Sept. 26, 2025) — precedential (precedential_decision) — https://mpep.io/guidance/desjardins-arp-2025-09-26
- 2025-08-04 — Reminders on Evaluating Subject Matter Eligibility of Claims under 35 U.S.C. 101 (memorandum) — https://mpep.io/guidance/memo-101-2025-08-04
- 2025-01-17 — Revised and New Form Paragraphs in View of Setting and Adjusting Patent Fees During Fiscal Year 2025 (advance_notice) — https://mpep.io/guidance/anc-fees-fp-2025-01-17
- 2025-01-14 — Revised Form Paragraphs for Design Patents and Applications (advance_notice) — https://mpep.io/guidance/anc-design-fp-2025-01-14
- 2024-07-17 — 2024 Guidance Update on Patent Subject Matter Eligibility, Including on Artificial Intelligence (federal_register_notice) — https://mpep.io/guidance/fr-2024-ai-sme-update
- 2024-07-17 — July 2024 Subject Matter Eligibility Examples 47-49 (artificial intelligence) (example_set) — https://mpep.io/guidance/sme-examples-47-49
- 2024-07-17 — Index of Subject Matter Eligibility Examples (example_set) — https://mpep.io/guidance/sme-example-index
- 2019-10-17 — Subject Matter Eligibility Examples 43-46 (October 2019 Update) (example_set) — https://mpep.io/guidance/sme-examples-43-46
- 2019-01-08 — Form Paragraphs for the 2019 Revised Patent Subject Matter Eligibility Guidance (supporting_material) — https://mpep.io/guidance/peg-2019-form-paragraphs
- 2019-01-08 — Sample Subject Matter Eligibility Rejection under the 2019 Revised Guidance (supporting_material) — https://mpep.io/guidance/peg-2019-sample-rejection
- 2019-01-07 — Subject Matter Eligibility Examples 37-42 (2019 PEG) (example_set) — https://mpep.io/guidance/sme-examples-37-42
- 2019-01-07 — Frequently Asked Questions on the 2019 Revised Patent Subject Matter Eligibility Guidance (supporting_material) — https://mpep.io/guidance/peg-2019-faqs
- 2016-12-15 — Subject Matter Eligibility Examples 1-36 (Dec. 2014 - Dec. 2016) (example_set) — https://mpep.io/guidance/sme-examples-1-36

## MCP server (recommended for agents)

Hosted at https://api.mpep.io/mcp (streamable HTTP). Connect with a
PatentReply account — the server advertises its OAuth authorization server
(RFC 9728) and the client prompts a sign-in; no key needed:

    claude mcp add mpep --transport http https://api.mpep.io/mcp

Or pass an API key: --header "Authorization: Bearer <key>".

The server exposes this corpus with tools:
search, get_section, resolve_citation, what_cites, read_case,
get_form_paragraph, list_guidance, get_guidance, coverage, list_chapter.
get_section() flags post_revision_guidance on amended sections. Typical flow: search() ->
get_section() on hits; a citation in hand -> resolve_citation() (returns
full 35 U.S.C. / 37 CFR provision text); "where does the MPEP discuss
this case?" -> what_cites(); read the actual opinion -> read_case()
(full text for ~81% of cited cases).

## REST API

- https://mpep.io/api/v1/search?q={query}&scope=all|structured&limit=10 — BM25 full-text search
- https://mpep.io/api/v1/sections/{section_number} — section + quality flag + cited authorities + structured annotation
- https://mpep.io/api/v1/coverage — corpus edition/revision + structured coverage by chapter
- https://mpep.io/api/v1/nodes/{opaque_id} — node-level graph data

## Pages (HTML mirrors of the same data)

- https://mpep.io/section/{section_number} — e.g. /section/2143
- https://mpep.io/case/{slug} — e.g. /case/ksr-intl-co-v-teleflex-inc (holding + every MPEP section citing it + full opinion where available)
- https://mpep.io/statute/{slug} — e.g. /statute/35-usc-103
- https://mpep.io/fp/{number} — e.g. /fp/7.30.01 (examiner form paragraphs)
- https://mpep.io/authorities — index of all cited authorities
- https://mpep.io/search?q={query}
- https://mpep.io/guidance — USPTO guidance after the pinned revision (and /guidance/{id})
- https://mpep.io/agents — full agent onboarding documentation

## License and access

Access is a PatentReply sign-in (OAuth, MCP clients) or an API key.
Free keys (REST + MCP, 60 req/min, 5,000/day) are issued at
https://mpep.io/keys — confirm your email and the key is revealed once.
REST calls on api.mpep.io accept either credential as a bearer token.

The source texts (MPEP, USC, CFR, court opinions) are public domain. The
structured data — citation graphs, annotations, holding summaries,
compiled artifacts — is proprietary to mpep.io: free to browse, and free
to query with a key for personal evaluation, but bulk access or model
training requires permission from the operator (contact sales@mpep.io for
volume/enterprise). Full terms: https://mpep.io/terms