patent-infringement-analysis

name	patent-infringement-analysis
title	Patent Infringement Analysis
description	Generates a structured patent infringement analysis mapping claims to accused product features via claim charts. Covers Phillips claim construction, literal infringement, doctrine of equivalents, validity defenses, damages, and strategic recommendations. Use when analyzing patent infringement, preparing claim charts, evaluating IP litigation risk, or assessing licensing and design-around options.
author	CaseMark
author_url	https://github.com/CaseMark/skills/tree/main/skills/legal/patent-infringement-analysis
license	Apache-2.0
version	0.1.0
execution_mode	open
jurisdiction	us
practice	ip
language	en

Patent Infringement Analysis

Produces a report evaluating whether an accused product or process infringes asserted patent claims, for litigation counsel, in-house teams, or technical experts.

Prerequisites

Gather before starting:

1. Asserted patent(s) — specification, claims, file history, prosecution docs, amendments, office action responses
2. Accused product/process — specs, manuals, marketing materials, drawings, schematics, source code, reverse engineering reports
3. Prior art — patents, publications, technical standards relevant to the technology
4. Asserted claims identified — which independent and dependent claims are at issue

Report Structure

1. Executive Summary

Element	Content
Overall conclusion	Qualified: "strong likelihood," "probable," "unlikely," or "no infringement"
Per-claim assessment	Bottom-line for each independent claim and key dependents
Recommendations	Cease / license / litigate / design-around / post-grant proceedings
Critical risks	Willfulness exposure, SOL deadlines, related litigation
Key uncertainties	Ambiguous terms, missing technical info, unsettled legal questions

2. Patent Overview

• Bibliographic data — number, title, dates (issue/filing/priority), inventors, assignee, family
• Technical field — problem, inventive concept, advantages over prior art
• Prosecution highlights — amendments, narrowing arguments, disclaimer/estoppel, canceled claims
• Asserted claims — dependency relationships, selection rationale
• Patent status — litigation history, post-grant proceedings, terminal disclaimers

3. Claim Construction

Apply Phillips v. AWH Corp. framework for each disputed term:

Source	Analysis
Claim language	Ordinary meaning to POSITA; context from surrounding claims
Specification	Definitions, "as used herein," lexicography, consistent usage
Prosecution history