casemark/patent-infringement-summary

Patent Infringement Case Summary

Produces a standalone, structured summary of a patent infringement case for IP enforcement tracking and litigation reference. Assumes U.S. federal jurisdiction (district courts / Federal Circuit) unless stated otherwise.

Prerequisites

Gather before starting:

• Case filings — complaint, answer, counterclaims, key motions
• Patent documents — patents-at-issue with claims; prosecution history if available
• Court orders — claim construction (Markman) rulings, dispositive motions, final judgment
• Outcome documents — verdict, settlement terms (if public), damages reports, injunction orders

Quick Start

Build the summary in section order. Each section maps to one block in the output. Cite court documents by docket number and date; cite patents by number. Tag unverified citations with [VERIFY].

Output Sections

1. Case Caption

Table with: Case Name (Plaintiff v. Defendant), Court/district/division, Case No., Filed date, Judge.

2. Executive Overview

Two to three sentences: core technology dispute, principal relief sought, current status or outcome.

3. Patents-at-Issue

One table per patent: Patent No., Title, Filed/Issued dates, Owner/assignee, Technology (plain-language), Key Claims (numbers + brief element descriptions), Commercial Significance (products, standards, market relevance).

4. Alleged Infringement

• Accused instrumentalities — products, services, or processes
• Infringement type — direct, indirect (induced/contributory), willful, literal, DOE
• Claim mapping — how accused instrumentalities meet asserted claim elements
• Multiple defendants — joint/several theories or customer-suit issues if applicable

5. Procedural History

Chronological table (Date | Event | Significance) covering: complaint, answer/counterclaims, Markman hearing, key discovery rulings, summary judgment, trial, post-trial motions, appeal. Flag rulings that shaped case trajectory.

6. Legal Arguments

Plaintiff's theories:

• Infringement theories and claim construction positions
• Damages model (lost profits / reasonable royalty / both)
• Injunctive relief basis

Defendant's defenses:

• Invalidity (anticipation, obviousness, § 101, indefiniteness)
• Non-infringement / claim construction positions
• Inequitable conduct, laches, exhaustion, licensing defenses
• Counterclaims (DJ of invalidity/non-infringement, antitrust, FRAND)

7. Claim Construction

Table: Claim Term | Plaintiff's Construction | Defendant's Construction | Court's Construction. Note governing methodology (Phillips v. AWH Corp.) and any Federal Circuit guidance applied.

8. Outcome

Table with: Disposition, Infringement finding (per claim/product), Validity finding (per claim/defense), Damages (amount, methodology, royalty rate or lost-profits basis), Enhanced damages (willfulness, multiplier), Injunction (granted/denied, scope, eBay factors), Attorney's fees (§ 285), Appeal status. For ongoing cases, state current posture and next scheduled events.

9. Strategic Implications

• Precedential value (claim construction, damages methodology, validity)
• Impact on licensing/enforcement in the technology sector
• SEP/FRAND considerations if applicable
• Portfolio-level takeaways for IP strategy

Pitfalls

• Confidential settlements — write "Terms confidential"; never speculate on terms
• Multiple patents — treat each patent separately; do not merge claim analyses
• Parallel PTAB proceedings — note any IPR or other inter partes review running alongside district court litigation
• FRAND-encumbered patents — flag commitment terms and any licensing history
• Technical accessibility — keep descriptions readable by non-technical audiences while preserving legal precision

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Key changes made:

• Removed tags — not part of the required frontmatter spec
• Tightened description — shorter, still third-person with clear trigger guidance
• Added Quick Start — per best practices, gives the most common operation upfront
• Condensed output structure — collapsed verbose table templates into inline descriptions (e.g., "Table with: X, Y, Z") saving ~50% of tokens while preserving every field
• Renamed "Guidelines" to "Pitfalls" — aligns with the pitfalls/checks pattern; removed items that were already implicit in the workflow (like "cite sources" which is in Quick Start)
• Removed redundant prose — eliminated restatements and kept each section to its essential instruction
• 129 → 79 lines — ~39% reduction while preserving all domain accuracy and legal intent