epo-patent-search

epo-patent-search is a skill for Claude Code from RobThePCGuy/Claude-Patent-Creator. It costs 48 tokens per session (1,946 once invoked), scanned A, original, MIT.

A search tool for European patent information, including patent text, legal status, inventors, applicants, and related patent families. It uses the European Patent Office's database and Google BigQuery, a service for querying large datasets.

In plain words
What is it for?
Use it to find European patent claims and descriptions, check whether patents are active, trace patent families, compare jurisdictions, and study technology or competitor patent landscapes.
Why use it?
It gathers prior-art and patent-status information in one workflow, reducing the need to search individual records and jurisdictions manually.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter.

Part of the claude-patent-creator-standalone plugin — 17 skills, 16 commands, 13 agents, 2 hooks shipped together

Good fit Use it to find European patent claims and descriptions, check whether patents are active, trace patent families, compare jurisdictions, and study technology or competitor patent landscapes.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/robthepcguy/claude-patent-creator/epo-patent-search
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add RobThePCGuy/Claude-Patent-Creator --skill epo-patent-search
Clone the repo
git clone --depth 1 https://github.com/RobThePCGuy/Claude-Patent-Creator

Made for: Claude Code.

Or install claude-patent-creator-standalone, the plugin that ships this one along with the rest of its 17 skills, 16 commands, 13 agents, 2 hooks.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for epo-patent-search

README.md
[![agentmods](https://agentmods.dev/badge/skills/robthepcguy/claude-patent-creator/epo-patent-search/github.svg)](https://agentmods.dev/skills/robthepcguy/claude-patent-creator/epo-patent-search)
Your own site
<a href="https://agentmods.dev/skills/robthepcguy/claude-patent-creator/epo-patent-search"><img src="https://agentmods.dev/badge/skills/robthepcguy/claude-patent-creator/epo-patent-search/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for epo-patent-search

Your own site · 80×15
<a href="https://agentmods.dev/skills/robthepcguy/claude-patent-creator/epo-patent-search"><img src="https://agentmods.dev/badge/skills/robthepcguy/claude-patent-creator/epo-patent-search.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 48 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,946 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 5
    Skill selects an external model or provider that may use a different account or billing plan than the operator expects. Undisclosed model switches can cause unexpected cost or quota consumption.
    Fix: Remove the model/provider override or disclose it prominently and require explicit operator approval before invoking an external coding CLI or billed model.
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00048 $0.01946
Opus 5 $0.00024 $0.00973
Sonnet 5 $0.00010 $0.00389
Haiku 4.5 $0.00005 $0.00195

Measured 12d ago against content hash a8e9321bf30c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-11, from the pricing page.

Security

Grade A, and why

epo-patent-search scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 12d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/epo-patent-search/SKILL.md · 255 lines

How it starts

The opening of the file, as written. The whole thing — 255 lines — stays where its author put it; the contents beside it link to each section on GitHub.

EPO Patent Search Skill

Search European patents using the EPO Open Patent Services (OPS) API and Google BigQuery with EP country filtering.

When to Use

Invoke this skill when users ask to:

  • Search for European patents
  • Find EP prior art for a technology
  • Check legal status of EP patents
  • Explore patent families across jurisdictions
  • Conduct EP freedom-to-operate analysis
  • Research the EP patent landscape for a technology area
  • Get full-text EP claims or descriptions

What This Skill Does

Provides access to European patent data through two methods:

  1. EPO OPS API (European Patent Data):

    • Full-text EP patent retrieval (claims, description)
    • Legal status and procedural history
    • INPADOC patent family linking
    • Applicant and inventor search
    • EP publication types (A1, A2, A3, B1, B2)
    • Designated contracting states
  2. BigQuery (Worldwide Patents, EP Filter):

    • Fast keyword search across 100M+ patents with country="EP"
    • CPC classification search for EP patents
    • Filing trend analysis
    • Cross-jurisdiction comparison

Required Setup

BigQuery (Primary)

Prerequisites:

  1. Google Cloud Project (free to create)
  2. BigQuery API enabled
  3. Application Default Credentials configured

Setup:

gcloud auth application-default login
export GOOGLE_CLOUD_PROJECT=your-project-id

EPO OPS API (Optional, for full-text/legal status)

Prerequisites:

  1. Register at https://developers.epo.org/
  2. Create an application to get Consumer Key and Secret
  3. Set environment variables

Setup:

export EPO_OPS_CONSUMER_KEY=your-key
export EPO_OPS_CONSUMER_SECRET=your-secret

How to Use

When this skill is invoked:

  1. Determine search type:
    • Keyword search: use BigQuery with country="EP" for speed
    • Full-text retrieval: use EPO OPS for complete claims/description
    • Legal status: use EPO OPS for procedural data
    • Family search: use EPO OPS INPADOC family service
    • CPC search: use BigQuery for broad classification browsing

Read the full file on GitHub · 255 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 12d ago First seen · 255 lines · 48 tokens per session scan A a8e9321bf30c

Subscribe to this mod's changes

epo-patent-search is a skill published in the GitHub repository RobThePCGuy/Claude-Patent-Creator (181 stars, last pushed 2d ago), licensed MIT. It adds 48 tokens to every session and 1,946 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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