Preface

Patent invalidation declarations, responding to office actions, and requesting reexamination represent different procedural directions within the same regulatory framework: the former aims to challenge the stability of a third-party patent right, while the latter generally seeks to maintain or salvage an grant. In practice, one must first deconstruct the target claims, search for and fix evidence of prior art or conflicting applications, then determine how to combine primary grounds with auxiliary attacks, and finally draft the request and engage in oral proceedings. These steps are scattered across search databases, text comparisons, and document templates; relying solely on general dialogue models often leads to missed legal provision correspondences or procedural deadlines. The following section introduces the community Skill “Zhongzhixinjian-Patent Invalidation” (patent-invalidation) on SkillHub, designed to organize analysis and output according to the workflow of patent invalidation requests within Agents that support SKILL.md.

What is This

“Zhongzhixinjian-Patent Invalidation” is a professional Skill designed for Patent Invalidation Requests, identified by the coordinate @user_f26de39d/patent-invalidation. The current version is v1.1.1, sourced from the community, categorized as professional, and maintained by the publisher user_f26de39d.

The Skill description positions itself as: invalidating third-party patents through legal means; it operates in the opposite direction to responding to office actions (patent-oa-response) and reexamination requests (patent-reexamination) and involves more complex strategies. The page is tagged with requires_api_key=true, indicating that certain search or external capabilities may require API Key configuration. Specific fields should be based on the Skill instructions after installation.

Core Functions

The following capabilities are derived from the SkillHub page description; details not present in the materials are not expanded upon.

Invalidation Grounds Coverage (Combinable)

  • Novelty, Inventiveness, Practicality
  • Insufficient Disclosure (Patent Law Art. 26.3)
  • Claim Clarity and Support (Patent Law Art. 26.4)
  • Amendments Beyond Scope (Patent Law Art. 33)
  • Lack of Essential Technical Features (Implementing Regulations Art. 20.2)
  • Double Patenting (Patent Law Art. 9.1)
  • Subject Matter Eligibility (Patent Law Art. 5, Art. 25)
  • Design Patents (Patent Law Art. 23)

Workflow-Related Capabilities

  1. Target Patent Deconstruction: Clarifies the hierarchy of claims and disputed features to lay the foundation for subsequent comparison.
  2. Evidence Search: Built-in PatSeek search engine, covering search directions such as target patent profiling, prior art, conflicting applications, and double patenting.
  3. Evidence Chain Organization: Correlates search results with invalidation grounds to avoid “having literature without mapping.”
  4. Ground Combination Strategy: Supports layouts combining primary attacks and auxiliary feints (described as “Primary Attack + Auxiliary Feint” in the intro).
  5. Feature Mapping Comparison: Aligns the content disclosed in evidence with claim features to support arguments for novelty, inventiveness, etc.
  6. Request Drafting and Procedural Strategy: Assists with the invalidation pathway at the level of documentation and procedural milestones.

Suitable Trigger Phrases (Official Introduction)

This Skill can be activated when users mention “invalidating a patent,” “challenging a patent right,” “making an invalidation request,” or express intent such as “patent invalidation analysis / search / evidence combination / ground layout.”

Installation and Activation

The installation method provided on the official SkillHub page is to instruct the Agent to install the coordinate @user_f26de39d/patent-invalidation according to the SkillHub Installation Instructions.

1. Install SkillHub CLI (if not already installed)

First, check if it is already installed:

command -v skillhub && skillhub --version

If not installed, use the official script (full installation includes CLI and default Skills):

curl -fsSL https://skillhub-1388575217.cos.ap-guangzhou.myqcloud.com/install/install.sh | bash

CLI only installation:

curl -fsSL https://skillhub-1388575217.cos.ap-guangzhou.myqcloud.com/install/install.sh | bash -s -- --cli-only

2. Install this Skill to the current Agent’s skills directory

When installing, you must use --dir to point to the skills directory recognized by the current client; otherwise, it defaults to ./skills/ which may not be loaded.

skillhub install @user_f26de39d/patent-invalidation --dir <skills directory>

Common paths (from SkillHub installation documentation):

  • Cursor: ~/.cursor/skills/
  • Claude Code: ~/.claude/skills/
  • Codex: ~/.codex/skills/ or .agents/skills/ under the project

Directories vary by client; refer to your current environment. After installation, refresh or restart the Agent as required by the client to activate the Skill.

3. API Key

The page tag indicates requires_api_key=true. If PatSeek or related searches require a key, it should be configured in the Skill documentation or environment variables. Without configuration, search-related steps may be unavailable or degraded; refer to the instructions within the Skill package.

Typical Usage

The official page does not provide a standalone long example dialogue. Typical usage involves using natural language to specify the invalidation target and known information within a session where the Skill is installed, allowing the Skill to guide deconstruction, search, and ground layout. You can organize inputs by referring to the trigger scenarios in the introduction, for example:

  • Provide the application number or publication number of the target patent and request Claim Deconstruction and Novelty / Inventiveness search strategies prior to invalidation.
  • Explain that you have existing comparison literature and request Feature Mapping and suggestions for a Primary Ground + Auxiliary Ground combination.
  • Once evidence is largely complete, request assistance in organizing the key points of the Invalidation Request and procedural considerations.

Specific output formats and the granularity of legal citations depend on the SKILL.md and accompanying instructions within the Skill.

Applicable Scenarios and Notes

Who is it for

  • Personnel in corporate IP, external law firms, and patent agencies responsible for invalidation declarations or patent stability challenges, who wish to unify the “deconstruction—search—mapping—documentation” rhetoric and checklists within an Agent.
  • Users who are already using Skills for directions like patent-oa-response and patent-reexamination and need to maintain methodological consistency in the opposite procedure.

Limitations and Notes

  1. Community Source: Although categorized as professional, the source is the community. Output should be reviewed by a licensed agent or attorney before submission to CNIPA or for use in court.
  2. API Key: Capabilities related to the search engine may depend on keys; confirm compliance and account requirements before installation.
  3. Data and Ratings: The SkillHub page shows version v1.1.1; community ratings and download counts fluctuate, refer to the Skill Detail Page for the latest (at the time of crawling, the rating was 100000, with 1292 downloads).
  4. Cannot replace formal search and legal advice: Invalidation results depend on the authenticity of evidence, procedural deadlines, and examination practices. The Skill assists with workflow and argumentation structure but cannot replace verification in official search databases or formal legal judgment.

Conclusion

“Zhongzhixinjian-Patent Invalidation” integrates common legal grounds for invalidation, PatSeek search directions, evidence chains, and primary/feint strategies into a single Agent Skill, suitable for activation when you “need to invalidate, need to challenge a patent right, or need to layout reasons.” Installation and coordinates are subject to SkillHub:

  • Detail Page: https://www.skillhub.cn/skills/user_f26de39d/patent-invalidation
  • Installation Coordinate: @user_f26de39d/patent-invalidation
  • Installation Documentation: https://skillhub.cn/install/skillhub.md