IP Litigation Deposition Supplement
Provides IP-specific deposition examination frameworks for patent, trademark, copyright, and trade secret cases. Covers inventor, infringer, licensing, and expert witnesses with question maps for claim construction, prior art, willfulness, Georgia-Pacific factors, likelihood of confusion, and trade secret identification. Use when preparing IP litigation depositions alongside @deposition-preparation and @deposition-expert-witness.
IP Litigation Deposition Supplement
IP-specific examination strategies for patent, trademark, copyright, and trade secret depositions. Supplements @deposition-preparation as the primary framework.
Quick Start
Activate @deposition-preparation as primary framework
Gather: IP registrations, prosecution history, claim construction order, licensing history, expert reports
Identify case type below and select relevant witness frameworks
For expert depositions, also apply @deposition-expert-witness
Case Types
Type
Key Issues
Key Witnesses
Patent
Claim construction, infringement (literal/DOE), validity, willfulness, damages
Inventors, R&D/engineering, licensing, technical/damages experts
Trademark
Distinctiveness, priority, likelihood of confusion, willfulness, damages
Mark owner, marketing, survey experts, damages expert
Copyright
Ownership, originality, access, substantial similarity, fair use, damages
Authors, access witnesses, similarity/damages experts
Trade Secret
Existence, reasonable secrecy measures, misappropriation, damages
Secret owners, accused misappropriators, security, damages expert
Examination Frameworks
Patent — Inventor
Topic
Key Questions
Conception
First conception date; problem solved; contemporaneous records; who was told
Reduction to practice
Date; testing/prototyping; corroborating documentation
Prior art knowledge
Known prior art; searches conducted; how invention differs from [specific ref]
Claims
Understanding of claim scope; meaning of [disputed term]; relationship to accused product
Prosecution
Involvement; review of office actions; reasons for amendments
Patent — Accused Infringer Technical Witness
Topic
Key Questions
Product/process
How [accused product] works; key components; development timeline
Design process
Alternatives considered; why this approach; patent awareness; design-around efforts
Claim mapping
Presence of [claim element]; how product performs [claim function]
Non-infringement
Which limitation not met; how product differs from claims
Prior art
Prior products/publications before patent priority date
Patent — Licensing/Damages Witness
Topic
Key Questions
Licensing history
Existing licenses; royalty rates; negotiation process; comparables
Commercial success
Sales figures; success attributable to patented feature
Market
Competitors; non-infringing alternatives; market share impact
Hypothetical negotiation
Pre-infringement terms; Georgia-Pacific factors; royalty rate and base
Patent — Technical Expert
Apply @deposition-expert-witness plus:
Claim construction : Basis for construing [disputed term]; prosecution history; specification support
Infringement : Element-by-element walkthrough; physical exam of accused product; source code review (software)
Validity : Prior art considered; whether [reference] discloses [element]; PHOSITA motivation to combine
Patent — Damages Expert
Topic
Key Questions
Reasonable royalty
Methodology; Georgia-Pacific factors applied; comparable licenses; royalty base
Lost profits
"But for" world; manufacturing capacity; non-infringing alternatives; market share methodology
Apportionment
Method for isolating patented feature value; consumer demand driver analysis
Trademark — Mark Owner
Topic
Key Questions
Creation/adoption
When/who created; why chosen; first use in commerce
Distinctiveness
Inherent or acquired secondary meaning; consumer recognition; advertising investment
Confusion
Awareness of defendant's mark; actual confusion incidents; similarity; relatedness of goods
Damages
Lost sales; goodwill damage; costs addressing confusion
Trademark — Accused Infringer
Topic
Key Questions
Adoption
When/who decided to use mark; prior search; awareness of plaintiff's mark
Intent
Intent to trade on goodwill; legal advice; good/bad faith indicators
Confusion
Known confusion incidents; misdirected customers/orders
Market
How customers find and distinguish products
Trade Secret — Owner
Topic
Key Questions
Identification
Specific description; what makes it secret; development date and team
Secrecy measures
Physical/electronic security; NDAs; need-to-know restrictions; training
Value
Development investment; competitive advantage; cost of independent development
Misappropriation
How defendant acquired secret; evidence; timing
Trade Secret — Accused Misappropriator
Topic
Key Questions
Relationship
Nature of relationship; access; agreements signed; understood obligations
Accused information
Awareness of trade secret; how obtained; independent development evidence
Use/disclosure
Use of information; third-party disclosure; relation to accused product
Notice
Knowledge of confidentiality; steps taken regarding obligations
Document Focus Areas
Document
Topics
Prosecution file
Amendments, arguments, prior art, rejections
Invention records
Lab notebooks, conception/RTP dates, corroboration
Licensing agreements
Terms, comparability, negotiation history
Design/technical docs
Development process, alternatives, product operation
Marketing materials
Features emphasized, performance claims
Confidentiality agreements
Scope, obligations, signatories
Source code
Software patents, trade secret cases
Financial records
Damages calculation support
Preparation Checklist
[ ] Review patents/registrations/trade secret identification
[ ] Review prosecution history and file wrapper (patent)
[ ] Map disputed claim terms and proposed constructions (patent)
[ ] Prepare claim element mapping chart (patent)
[ ] Identify prior art references and gaps (patent/copyright)
[ ] Understand accused product/process technical operation
[ ] Review licensing agreements and comparables
[ ] Prepare likelihood of confusion analysis (trademark — DuPont)
[ ] Review confidentiality agreements and secrecy measures (trade secret)
[ ] Understand damages theory and expert methodology
[ ] Review expert reports — apply @deposition-expert-witness
Pitfalls
Pin claim constructions before deposing technical witnesses — questions must track operative constructions
Lock inventors to specific conception/RTP dates with corroborating documents
Force precise trade secret identification before substantive questions — vague descriptions create indefiniteness defenses
Prosecution history estoppel: lock infringers into positions foreclosing DOE arguments
Cover all 15 Georgia-Pacific factors with damages witnesses; gaps invite Daubert challenge
Willfulness (§ 284): pre-suit patent knowledge required — establish/negate knowledge timeline
DTSA vs. state UTSA: confirm governing law; definitions and preemption scope vary
Copyright fair use: explore each of four factors independently with relevant witnesses
References
35 U.S.C. §§ 101–287 (Patent Act)
15 U.S.C. §§ 1051–1141 (Lanham Act)
17 U.S.C. §§ 101–810 (Copyright Act)
18 U.S.C. §§ 1836–1839 (DTSA)
Georgia-Pacific v. U.S. Plywood , 318 F. Supp. 1116 (S.D.N.Y. 1970)
Markman v. Westview Instruments , 517 U.S. 370 (1996)
Halo Electronics v. Pulse Electronics , 579 U.S. 93 (2016)
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