Patent prior-art and landscape intelligence skill — not generic patent help.

MITAuto-check passedLegal & Compliance

Install Patent

skills CLI
$ npx skills add alirezarezvani/claude-skills --skill patent -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install alirezarezvani/claude-skills patent --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/alirezarezvani/claude-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/research/patent/skills/patent .claude/skills/patent && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
patent
GitHub stars
28k
Token cost
~4.1k tokens
SKILL.md length
1,823 words
Files
7 (incl. scripts, references)
Skills in repo
342
Repo updated
First seen
Licence
MIT

At a glance

Patent prior-art and landscape intelligence skill — not generic patent help.

  • Works in 7 steps: Grill-Me Intake (6 forcing questions,… → Search Strategy Selection → Multi-Source Search (Sequential) → …
  • The user asks for patent searching
  • SKILL.md covers Non-Generic Framing — The…, Agent Integrity Rules…, Phase 1: Grill-Me Intake (6… and Phase 2: Search Strategy…, plus 11 more sections
  • Runs Python scripts from its folder; calls python and python3; reaches patents.google.com and worldwide.espacenet.com

What it does

Patent is an agent skill from alirezarezvani/claude-skills. Patent prior-art and landscape intelligence skill — not generic patent help. Commits to one of five sub-use-cases via forcing intake (novelty search / freedom-to-operate / competitive landscape / acquisition diligence / litigation prior-art) before any search runs. Searches Google Patents, Espacenet, USPTO, and optionally Lens.org for citation-graph signals. Output is an editable Word document (.docx) with verdict, ranked closest art (claim-text extracted), CPC-class-aware landscape, family-resolved hits…

Its SKILL.md is about 4.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including scripts and reference files (for example `references/cpc_classification_canon.md`, `references/legal_disclaimer_discipline.md` and `references/sub_use_case_routing.md`).

It sits in Legal & Compliance, covering Intellectual property. It works with Microsoft Word. The repository describes itself as: 380 Claude Code skills & agent skills & plugins (30+ Agents, 70+ custom commands, 380+ skills, customizable references, scripts)for Claude Code, Codex, Gemini CLI, Cursor, and 8… The licence is MIT.

When your agent uses it

  • The user asks for patent searching
  • Prior art search for [invention]
  • Freedom to operate analysis for [product])

Example prompts

  • “prior art search for [invention]”
  • “freedom to operate analysis for [product]”
  • “/patent”

Requirements

  • Python 3
  • Node.js

Workflow steps

7 steps, taken from the step headings in SKILL.md.

  1. Grill-Me Intake (6 forcing questions, one at a time)
  2. Search Strategy Selection
  3. Multi-Source Search (Sequential)
  4. Claim Extraction + Relevance Scoring
  5. Citation Graph + Family Resolution
  6. DOCX Generation (8 Sections)
  7. Deliver

What it can do on your machine

Read from SKILL.md and the folder at commit 19392f7. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 3 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • python
    • python3

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • patents.google.com
    • worldwide.espacenet.com
    • patents.uspto.gov

    Also links to:

    • ppubs.uspto.gov
    • lens.org

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Patent loads about 4.1k tokens when it runs, and up to ~11k if it reads all its reference files. Until then it costs about 238 tokens; SKILL.md has 1,823 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~238
When it runs · the whole SKILL.md, loaded when a task matches
~4.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~11k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from alirezarezvani/claude-skills at commit 19392f7, republished under its MIT licence (© alirezarezvani). 1,823 words, ~4,109 tokens.

Download SKILL.mdSave it as .claude/skills/patent/SKILL.md (or your agent's skills folder). This skill also uses 6 other files; get the full folder from GitHub.
name
patent
description
Patent prior-art and landscape intelligence skill — not generic patent help. Commits to one of five sub-use-cases via forcing intake (novelty search / freedom-to-operate / competitive landscape / acquisition diligence / litigation prior-art) before any search runs. Searches Google Patents, Espacenet, USPTO, and optionally Lens.org for citation-graph signals. Output is an editable Word document (.docx) with verdict, ranked closest art (claim-text extracted), CPC-class-aware landscape, family-resolved hits, geographic coverage, FTO flags where applicable, strategy recommendations, and full audit log. Use when the user asks for patent searching or analysis (e.g., 'prior art search for [invention]', 'freedom to operate analysis for [product]'). Produces search signal, not legal advice — always recommends consulting a patent attorney before filing or licensing decisions. Trademark, copyright, and trade-secret questions are out of scope.
license
MIT
metadata.source_spec
megaprompts/11-patent-megaprompt.md
metadata.build_pattern
Path B (direct conversion)
metadata.research_pack_convention
Agent Integrity Rules verbatim per PR #657 audit; sub-use-case routing variant
metadata.version
1.0.0

Patent — Prior-Art + Landscape Intelligence

Portability: Requires web_fetch (Google Patents, Espacenet, USPTO), WebSearch (adjacent academic art), Node.js with docx package, and optionally Lens.org API key for citation-graph signals. Works in Claude Code CLI natively. In Claude.ai with web tools + Code Execution + BYOK Lens.org, the workflow is supported.

Out of scope: trademark, copyright, trade-secret. These are flagged at intake. Use a different skill or qualified counsel.

Legal disclaimer: This skill produces search signal, not legal advice. Verdicts are technical assessments. Always consult a patent attorney before filing or licensing decisions.

Non-Generic Framing — The Differentiator

This skill is prior-art + landscape intelligence. It refuses to be a bucket. Every invocation commits to one of five sub-use-cases via the grill-me intake before any search runs. The chosen sub-use-case dictates the entire search strategy, ranking heuristics, and DOCX emphasis.

Sub-use-caseSearch strategyDOCX emphasis
Novelty searchNarrow + claims-text focused; pre-filing date irrelevantClosest art + claim-differentiation
Freedom-to-operateBroad + active patents only; jurisdiction-filteredFTO flags + claim-by-claim risk
Competitive landscapeBreadth + filer tally + CPC trendsFiler map + investment hotspots
Acquisition diligenceSpecific assignee + portfolio scope + assignment chainPortfolio table + ownership verification
Litigation prior-artSpecific target patent + adjacent art before priority dateKnock-out candidates ranked by relevance

See references/sub_use_case_routing.md for the canon.

Agent Integrity Rules (Research-Pack Convention)

Locked verbatim per PR #657 audit.

  • Execution discipline. Sequential search calls only. 1 query/sec rate limit. Confirm response received before next call.
  • Source discipline. Cite only patents returned by THIS session's tool calls. Training knowledge labeled [Not from search — reference information] and excluded from counts.
  • Three-count tracking. Queries sent / patents received (shown) / patents cited. Surfaced in audit log.
  • Retry policy. On failure → wait 3s → retry once → log. After 3 consecutive failures across tools: stop, alert user, explain what's missing.
  • Plan-tier detection. Lens.org free tier = 1000 queries/month. Google Patents has no auth but rate-limits per IP. Detect and surface caps.

Phase 1: Grill-Me Intake (6 forcing questions, one at a time)

Q1 (root) — Invention description

Describe the invention in 2–3 sentences. What does it do, and what's new about it?

Why I'm asking: Concept and keyword extraction depends entirely on a precise description. Vague descriptions ("AI for healthcare", "a better widget") will be rejected — push back and ask the user to specify what the invention does and what differentiates it from existing approaches.

Refuse mush. If answer is generic, ask once more: "What does it do that existing systems don't?" Then commit (with caveat in DOCX).

Q2 (depends on Q1) — Sub-use-case commitment

What's the purpose of this search? Pick one:

  1. Novelty search (am I novel enough to file)
  2. Freedom-to-operate (will I get sued if I ship)
  3. Competitive landscape (who else plays here)
  4. Acquisition diligence (does target really own X)
  5. Litigation prior-art hunting (kill a specific patent)

Why I'm asking: Each path uses a fundamentally different search strategy. I'll refuse to start without you picking one.

Forcing format. If user says "all of them", push for the primary purpose — secondary purposes can run as follow-up searches.

Q3 (asked only if Q2 ∈ {FTO, landscape, diligence}) — Jurisdictions

Which jurisdictions matter? Pick all that apply: US / EP / CN / JP / KR / PCT / worldwide.

Why I'm asking: FTO only matters where you'll sell. Landscape changes radically by region. Diligence requires checking all jurisdictions where the target operates.

Skip for novelty (priority date is jurisdictionally portable) and litigation (jurisdiction is set by the target patent).

Q4 (depends on Q1) — Known prior art

Have you already seen prior art close to this? Cite a patent number or paper.

Why I'm asking: If you know one piece of art, I can search adjacent to it — much more precise than starting cold. If you don't, that's fine — just confirm.

Anchoring. Accept "none" but ask if the user has seen any related work even informally.

Q5 (depends on Q2) — Risk tolerance

Risk tolerance for this search: strict (one close hit means abandon the path) or signal-gathering (you want the lay of the land regardless)?

Why I'm asking: Strict mode ranks aggressively and surfaces verdict-grade hits; signal mode prioritizes breadth and visualizations.

Asked for novelty and FTO; skipped for pure landscape (always signal-gathering by definition).

Q6 (asked only if Q2 ∈ {novelty, FTO}) — Attorney status

Have you spoken to a patent attorney? This skill produces search signal, not legal advice. Confirm you understand this is for technical assessment only.

Why I'm asking: Novelty and FTO have legal consequences. The skill's verdict is signal-grade; legal positions require qualified counsel.

Triggers the legal-disclaimer footer in the DOCX. Skipped for landscape and diligence (lower legal exposure).

Stop condition: After Q6 (or earlier if dependency skips applied), commit and start Phase 2. Never re-open intake after Phase 2 begins.

Phase 2: Search Strategy Selection

Deterministic from intake answers. Use scripts/sub_use_case_router.py:

bash
python scripts/sub_use_case_router.py \
  --sub-use-case novelty \
  --jurisdictions "" \
  --risk strict \
  --known-art "US10000000B2"

Returns: query plan (5-8 queries) + ranking heuristic + DOCX emphasis flags.

Phase 3: Multi-Source Search (Sequential)

Source priority
  1. Google Patents (https://patents.google.com) — workhorse, no auth required, broad coverage
  2. Espacenet (https://worldwide.espacenet.com) — global coverage, good for non-US art
  3. USPTO PPS (https://ppubs.uspto.gov) — US deep dive
  4. Lens.org (https://www.lens.org) — citation graph, BYOK API key required
Per-sub-use-case query patterns

Novelty:

  • 3 narrow queries on invention-specific terminology (Google Patents)
  • 2 broad concept queries with synonyms (Google Patents + Espacenet)
  • 1 CPC-class-restricted query if class identified from initial hits

FTO:

  • Jurisdiction-filtered: only active patents (not expired, not abandoned)
  • Date filter: priority < today
  • Active-claim text extraction for each hit

Competitive landscape:

  • Broader queries on the technology space
  • CPC class identification → tally top filers in that class
  • 10-year filing trend by year per top-5 filer

Acquisition diligence:

  • Specific assignee searches (target company + subsidiaries + named inventors)
  • Assignment chain check (USPTO assignment recordation)
  • Family resolution for deduplication

Litigation prior-art:

  • Target patent input required (number)
  • Priority date extraction
  • Search for art before priority date in same CPC classes
  • Adjacent-claim-language search
Sequential discipline

1 q/sec across ALL sources combined. Tracked via scripts/citation_tracker.py with timestamp-enforced gap.

Phase 4: Claim Extraction + Relevance Scoring

For each closest-art hit:

  • Pull independent claim 1 (the broadest claim — primary anticipation/obviousness vehicle)
  • Pull key dependent claims (claims that add the inventive step)
  • Score relevance against invention description (overlap of claim language with Q1 terminology)

Rank by score. Verdict per sub-use-case (NOVEL / POTENTIALLY NOVEL / NOT NOVEL for novelty; CLEAR / FLAGGED / HIGH RISK per jurisdiction for FTO).

Phase 5: Citation Graph + Family Resolution

Citation graph (Lens.org BYOK)

If user provides Lens.org API key:

  • Foundational-patent identification (cited-by count > threshold, typically 50+)
  • Recent high-cite signals (citations in last 24 months as proxy for current activity)
  • Forward citations from target patent (litigation prior-art) or from closest art (novelty)

If no Lens.org key: skip; note in audit log; recommend manual citation review on Google Patents.

Show full SKILL.md (730 more words)Show less
Family resolution

Same invention often filed in multiple jurisdictions (US + EP + JP + CN). Group by family ID or priority number to avoid double-counting. Use scripts/family_resolver.py:

bash
python scripts/family_resolver.py --hits-file hits.json
# Returns: deduplicated family list + family-member jurisdictions

CPC/IPC Classification Awareness

Critical: keyword search alone misses adjacent art. After initial search, extract the CPC/IPC classes from top 5 hits and run one class-restricted query. This consistently surfaces art that keyword search misses.

See references/cpc_classification_canon.md for the canon.

Phase 6: DOCX Generation (8 Sections)

Sub-use-case-dependent emphasis. Via Node.js + docx library.

  1. Executive Summary + Verdict — Sub-use-case banner + one-line verdict (NOVEL / FLAGGED / etc.) + 3-4 key findings + legal disclaimer footer
  2. Closest Prior Art — 5-10 patents in ranked order. Per hit: hyperlinked title + assignee + filing/priority dates + independent claim 1 text (italicized) + relevance score + relevance rationale (1-2 sentences)
  3. Patent Landscape — Top filers table (top 10 by count) + 10-year filing trend description + CPC class distribution table. Only for landscape and diligence; abbreviated otherwise.
  4. Citation Graph Signals — Foundational patents (if Lens-enabled) + recent high-cite activity. If Lens unavailable, note "manual review recommended" and skip table.
  5. Geographic Coverage — Filings by jurisdiction for top 10 hits. Only for FTO, landscape, diligence; skipped for novelty and litigation.
  6. FTO Flags (FTO only) — Active patents posing infringement risk. Per flag: hyperlinked patent + jurisdiction + relevant claims + risk level (HIGH/MEDIUM/LOW) + mitigation note.
  7. Strategy + Recommendations — Sub-use-case-specific:
    • Novelty → claim differentiation suggestions
    • FTO → design-around hints + jurisdiction strategy
    • Landscape → who-to-watch list
    • Diligence → red flags in portfolio
    • Litigation → ranked knock-out candidates
    • Mandatory disclaimer to consult patent attorney for any filing/licensing decision.
  8. Audit Log — Searches table (#, query, source, results, status), counts (sent/shown/cited), tool constraints (plan-tier notes), failed steps, attorney-consultation reminder
Styling

Arial 12pt body, navy headings (#1a3a5c), light blue table headers (#e8f0f8), red FTO-flag callout. ExternalHyperlink patterns:

  • Google Patents: https://patents.google.com/patent/[number]
  • Espacenet: https://worldwide.espacenet.com/patent/...
  • USPTO: https://patents.uspto.gov/patent/...

Date Discipline

Distinguish at every hit:

  • Filing date — when the application was first submitted
  • Priority date — earliest claim of priority (often earlier than filing)
  • Publication date — when the application became public (typically 18 months after priority)
  • Grant date — when the patent was granted (later than publication)

Surface the legally-relevant date per sub-use-case:

  • Novelty → priority date (vs invention's anticipated filing date)
  • FTO → grant date + status (active vs expired)
  • Landscape → publication date (when public knowledge began)
  • Diligence → grant date + assignment date
  • Litigation → priority date of target patent (sets the prior-art cutoff)

Phase 7: Deliver

  • Save: <output-dir>/patent_<invention-slug>_<sub-use-case>_<YYYY-MM-DD>.docx
  • Chat summary: file path + sub-use-case + verdict + audit counts + plan-tier
  • Validate: check zip integrity with python3 -c "import zipfile,sys; zipfile.ZipFile(sys.argv[1]).testzip()" <docx> (no output = intact), then confirm the required sections are present
  • Reminder: "Consult patent attorney before filing/licensing"

Tooling

ScriptRole
scripts/citation_tracker.pyMulti-source three-count audit (Google Patents + Espacenet + USPTO + Lens.org) at ~/.patent_sessions/<session>.json
scripts/family_resolver.pyGroup same-invention filings across jurisdictions by family ID / priority number
scripts/sub_use_case_router.pyDeterministic search-strategy selection from intake answers

References

Error Handling

FailureBehavior
User refuses to commit to sub-use-caseRefuse to proceed. Re-ask Q2 with examples.
Invention description is genericReject answer. Re-ask Q1 with "what does it do that existing systems don't?"
Google Patents rate-limitsWait 3s, retry once. Fall back to Espacenet for that query. Log in audit.
Lens.org key missingSkip citation graph section, note "manual review recommended" in DOCX.
Claim text extraction failsFall back to abstract; flag as "abstract-only" in relevance rationale.
Family resolution incompleteNote in audit; same-invention duplicates may appear; suggest manual deduplication.
All searches return <3 hitsSurface explicitly as "either niche art or genuine gap"; never fabricate.
3 consecutive tool failuresStop, alert user, explain what's missing.
DOCX generation failsSave raw data as JSON fallback so user doesn't lose work.
Target patent number invalid (litigation)Validate format before search; ask user to confirm.

Anti-Patterns To Reject

  • Starting any search before user commits to a sub-use-case (refuses generic "patent help")
  • Batching all intake questions instead of one at a time
  • Accepting vague invention descriptions ("AI for healthcare")
  • Keyword-only search without CPC/IPC class follow-up
  • Treating family members as separate hits (must be deduplicated)
  • Confusing filing date with priority date with publication date
  • Skipping the legal disclaimer when sub-use-case has legal consequences
  • Reporting a verdict without claim-text evidence
  • Fabricating Lens.org citation data when key is absent
  • Suggesting design-arounds without acknowledging attorney review is required
  • Skipping the audit log

Version: 1.0.0 Source spec: megaprompts/11-patent-megaprompt.md (maintainer-local draft spec — gitignored, not present in the public repository) Build pattern: Path B (direct conversion). Research-pack sibling, sub-use-case routing variant.

© alirezarezvani, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 6 other files (scripts, references) in research/patent/skills/patent of alirezarezvani/claude-skills.

  • SKILL.md
  • references/cpc_classification_canon.md
  • references/legal_disclaimer_discipline.md
  • references/sub_use_case_routing.md
  • scripts/citation_tracker.py
  • scripts/family_resolver.py
  • scripts/sub_use_case_router.py

Open the folder on GitHubat commit 19392f7

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Works with

Questions about Patent

What does Patent do?

Patent prior-art and landscape intelligence skill — not generic patent help. Patent is an agent skill from alirezarezvani/claude-skills. Patent prior-art and landscape intelligence skill — not generic patent help.

When should I use Patent?

Patent fits situations like: the user asks for patent searching; prior art search for [invention]; freedom to operate analysis for [product]).

How do I install Patent in Claude Code?

Run `npx skills add alirezarezvani/claude-skills --skill patent -a claude-code`. Or copy the skill folder (research/patent/skills/patent in alirezarezvani/claude-skills) into .claude/skills/patent in your project. Claude Code loads it when a task matches its description.

How do I install Patent in Codex?

Run `npx skills add alirezarezvani/claude-skills --skill patent -a codex`. Or copy the skill folder (research/patent/skills/patent in alirezarezvani/claude-skills) into .agents/skills/patent in your project. Codex loads it when a task matches its description.

Can I use Patent in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add alirezarezvani/claude-skills --skill patent -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/patent, .gemini/skills/patent, .github/skills/patent and .opencode/skills/patent in your project.

What does Patent need to run?

Going by SKILL.md and its folder, Patent needs Python for the scripts in its folder and the command-line tools its instructions call (python and python3). Our summary lists: Python 3; Node.js.

Does Patent access the network?

SKILL.md names 5 domains. In commands or code: patents.google.com, worldwide.espacenet.com and patents.uspto.gov; the agent is likely to contact these when it follows the instructions. As links in the text: ppubs.uspto.gov and lens.org. This is read from the text; nothing was executed.

Is Patent safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Patent use?

Patent is published under the MIT licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Patent use?

About 4.1k tokens (SKILL.md is roughly 16k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 6.9k tokens, read only when the agent opens those files.

What are the alternatives to Patent?

Skills that share tags, products or a category with Patent: Paper to Chinese Patent Drafter (Yuan1z0825/nature-skills, 46k stars), Paper To Cn Patent (snipp-zha/Paper-to-patent-Skill, 105 stars), Patent Disclosure Skill (trsoliu/mini-wiki, 116 stars) and Patent Disclosure Skill (qzzqzzb/OpenClaudeScience, 106 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Patent?

alirezarezvani (a GitHub user) maintains it in alirezarezvani/claude-skills, which has 27,829 GitHub stars. The repository holds 342 skills in this directory. The repository was last updated on August 30, 2026.

Source: alirezarezvani/claude-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.