| name | opposition-summary |
| title | Trademark Opposition Summary |
| description | Generates structured analytical summaries of trademark opposition proceedings before the TTAB. Use when summarizing opposition filings, analyzing TTAB dispute posture, evaluating settlement options, or assessing trademark conflict strength. |
| author | CaseMark |
| author_url | https://github.com/CaseMark/skills/tree/main/skills/legal/opposition-summary |
| license | Apache-2.0 |
| version | 0.1.0 |
| execution_mode | open |
| jurisdiction | us |
| practice | ip |
| language | en |
Trademark Opposition Summary
Produces a self-contained analytical summary of a TTAB opposition proceeding for case evaluation and strategic decision-making. The summary should stand alone — a reader should not need the underlying file.
Prerequisites
- Opposition file: notice of opposition, answer, discovery materials, briefs, evidence, TTAB decisions/orders
- Application details: serial number, mark, goods/services, filing/priority dates
- Party identification: opposer and applicant names, counsel, marks at issue
Quick Start
- Gather all opposition file documents
- Extract key data points (see extraction checklist below)
- Produce the seven-section output structure
- Apply guidelines and verify citations
Extraction Checklist
Extract from uploaded documents:
- Application serial number, mark, goods/services, class(es) — from Notice of Opposition, application records
- Filing, priority, and publication dates — from application records, Official Gazette
- Opposer's mark(s), registration number(s), goods/services — from Notice of Opposition, registration certificates
- Opposition grounds (each statutory basis) — from Notice of Opposition
- Applicant's defenses — from Answer
- Key evidence (declarations, surveys, sales figures) — from trial briefs, exhibits
- Procedural dates (filing, answer, discovery close, trial) — from board orders, scheduling notices
- Outcome or current posture — from final decision or latest board order
Output Structure
1. Executive Overview
Parties, marks in conflict, application number. One paragraph on primary issues. Current status and outcome if concluded.
2. Opposition Grounds
For each ground asserted:
Ground: [e.g., Likelihood of Confusion — §2(d)]
- Factual basis: specific allegations
- Legal theory: statutory/precedential framework
- Key evidence: exhibits, declarations, survey data
Common grounds to check (mark [VERIFY] on statutory citations):
- Likelihood of confusion (Lanham Act §2(d))
- Dilution of famous mark (§43(c))
- Descriptiveness/genericness (§2(e)(1))
- Prior common law rights
- False suggestion of connection (§2(a))
- Geographic descriptiveness (§2(e)(2))
3. Likelihood of Confusion Analysis
