How to create a claims and defenses evidence matrix for Trademark Infringement Matters

A trademark claims and defenses evidence matrix connects each disputed proposition to supporting evidence, adverse evidence, governing authority, and the next proof-gathering decision. Build it around the pleaded theories, particular marks and challenged uses, and controlling jurisdiction—not a generic confusion checklist. The deliverable is a source-linked table showing what the record supports, what remains inference, which defenses require investigation, and who owns each unresolved question. Precise document references should let another lawyer reproduce the assessment without reconstructing the entire file.

When to use this workflow

Use this workflow when litigation counsel or an in-house team must assess a complaint, evaluate defenses, target discovery, or test support for a motion. It is particularly useful when multiple mark variants, products, territories, or periods make a single narrative misleading.

This guide concerns US federal trademark claims and federal district-court evidence analysis. Do not automatically transfer federal procedures to state litigation, TTAB proceedings, arbitration, or pre-suit investigations. Verify controlling precedent, local rules, and case-specific orders. The matrix organizes counsel’s analysis; it does not determine liability or admissibility.

What you need

Start with the operative pleadings, asserted registrations, ownership and assignment records, identified defenses, and controlling authorities. Assemble these matter-specific inputs:

• Challenged uses: packaging, advertisements, marketplace listings, product identifiers, mark variants, territories, and contextual captures.
• Commercial context: sales channels, customer groups, distributor relationships, permissions, and launch or expansion records.
• Confusion evidence: original customer communications, service tickets, returns, witness accounts, and contrary explanations.
• Defense evidence: design files, descriptive wording in context, earlier-use records, territorial sales, and relevant agreements.
• Foundations: custodians, collection provenance, potential witnesses, and testimony with page-and-line references.

Give each source a stable ID. Separate event, document, and capture dates: a recent screenshot alone does not establish a listing’s launch appearance. Keep legal analysis and restricted source materials within appropriate access controls.

Use the template

The companion template is Trademark Infringement Matters — Claims and defenses matrix. You can copy this table into your working document or spreadsheet.

Create a parent row for each pleaded claim and asserted defense, then linked subrows for material propositions. Identify the mark, goods or services, territory, and period within each proposition or by reference to a defined use ID.

The authority field records statutory subsections, controlling decisions with pinpoints, and verified burden allocations. Distinguish an element the claimant must prove from an affirmative defense or a denial of that element. Mark unfinished research expressly.

Supporting and adverse proof need document IDs, pinpoints, and short explanations. Use the foundation field for provenance, witnesses, and evidentiary limitations. The assessment distinguishes supported facts, disputes, inferences, and missing proof. Each action needs an owner and completion condition. Link longer analysis by stable reference without making the row unintelligible on its own.

Step by step

1. Define the theories and challenged uses

Read the pleadings and identify the conduct each theory targets. Section 1114(1)(a) addresses specified unauthorized uses in commerce of registered marks where likely confusion, mistake, or deception is present. Similarity alone does not establish those statutory conditions. 15 U.S.C. § 1114(1)(a).

Section 1125(a)(1)(A) addresses likely confusion concerning affiliation, connection, association, origin, sponsorship, or approval without making federal registration a textual prerequisite. 15 U.S.C. § 1125(a)(1)(A).

Record: parent rows linked to pleading paragraphs and defined uses. Separate dilution and false-advertising allegations rather than treating them as infringement elements. State whether remedies analysis is included or maintained elsewhere.

2. Translate governing law into proof questions

Research controlling decisions rather than attributing a universal confusion-factor test to the statute. Turn the applicable analysis into answerable propositions: “Listing U-02 reached purchasers through the same identified retailer” is more useful than “channels.”

Distinguish registration from incontestability. Section 1115(a) gives qualifying registrations prima facie evidentiary effect concerning validity, ownership, and exclusive use for specified goods or services. Section 1115(b) gives qualifying incontestable rights conclusive evidentiary effect within its stated scope, still subject to proof of infringement and enumerated defenses. 15 U.S.C. § 1115(a)–(b).

Record: proposition-level subrows, authority pinpoints, burdens, and legal research assignments. Do not treat a certificate as resolving ownership changes, every challenged use, or confusion.

3. Attach supporting and adverse sources together

Read each item in context. Preserve surrounding descriptions, seller identities, disclaimers, and adjacent messages. Distinguish defendant-controlled material from reseller or unrelated third-party content; record control as a question where uncertain.

Place contradictory evidence beside favorable material. A selection email may support one inference while the complete design history supports another. Repeated copies of one customer communication are not independent corroboration.

Record: source IDs, pages or message locations, relevant dates, and the proposition each item supports or contradicts. Identify operative versions and preserve material differences. Distinguish “no responsive source located in the reviewed collection” from “the event did not occur.”

4. Analyze defenses as separate proof questions

Give each asserted defense its own rows rather than burying it beneath claimant evidence. Section 1115(b)(4) addresses qualifying descriptive use otherwise than as a mark, fairly and in good faith. Section 1115(b)(5) includes conditions concerning adoption without knowledge, continuous use before specified statutory dates, and the geographic area proved. 15 U.S.C. § 1115(b)(4)–(5).

For descriptive use, examine the complete presentation and what the wording describes. For prior use, distinguish design or preparation from actual use; investigate continuity, relevant priority dates, and territory without extrapolating from isolated invoices.

Record: the particular defense, applicable conditions, supporting and adverse sources, and unmet conditions. Avoid “defense established” where key dates, presentation, or continuity remain unverified.

5. Test foundations and alternative explanations

Separate what a document appears to show from how counsel could establish it. Rule 901 requires sufficient evidence to support a finding that an item is what its proponent claims; authentication alone does not resolve other admissibility questions. Federal Rules of Evidence, Rule 901.

For customer communications, identify the speaker, exposure, exact language, and whether the account is firsthand or relayed. Personal knowledge and hearsay analysis depend on the witness and proposed use; neither automatic admission nor exclusion follows from calling something a confusion incident. Federal Rules of Evidence, Rules 602 and 801–802.

Record: foundation witnesses, proposed evidentiary purposes, unresolved objections, and alternative explanations. Identify separate layers where a service employee reports what a customer reportedly said.

6. Convert gaps into bounded investigative actions

Prioritize gaps by whether resolving them could change the assessment. Replace “obtain more marketing” with “identify who controlled listing U-02 during the disputed quarter and obtain its revision history.”

Choose a focused next step: inspect a document family, interview a knowledgeable employee, seek a defined record category, or research a legal proposition. Keep discovery administration in a separate tracker. The matrix should explain why the requested evidence matters, not duplicate the production calendar.

Record: unanswered question, requested source, owner, and completion condition. Distinguish unavailable evidence from evidence not yet sought. If a source cannot be obtained, identify a possible substitute and explain its limitations rather than silently closing the gap.

7. Review and version the assessment

Have a second reviewer trace important rows to their sources. Reconcile inconsistent dates, variants, and duplicate incidents. Test whether adverse evidence or another explanation changes the assessment.

Date the reviewed version and identify its purpose, such as discovery planning or motion evaluation. An internal matrix is not automatically admissible: Rule 1006 governs qualifying evidentiary summaries, including access to underlying materials, while Rule 107 separately governs illustrative aids that are not evidence. Federal Rules of Evidence, Rules 1006 and 107.

Record: review status, qualifications, assigned issues, and material changes. Separate source facts from counsel’s analysis before considering any court-facing presentation.

Worked example

Fictional scenario: Lumen Quay Outfitters alleges infringement of its registered LUMEN QUAY mark by Drift Lantern Goods through a marketplace listing titled “Lumen Quay Pack.” Drift Lantern asserts earlier regional use and descriptive fair use concerning separate catalog wording, “a pack for lantern-lit quay walks.” All parties, marks, documents, wording, and events are invented.

Counsel has a listing capture, reseller agreement, customer email, duplicate service ticket, undated catalog proof, and two invoices dated before the alleged marketplace launch. The invoices have not been compared with the legally relevant priority dates. Circuit-specific analysis remains unfinished. These are three representative subrows, not a completed merits assessment.

This changes the next decision: investigate control before attributing the listing, and contact the email sender rather than counting two incidents. The invoices justify targeted investigation, not a prior-use conclusion. The undated catalog proof belongs in separate descriptive-use rows; its wording cannot establish how the marketplace title functioned. Missing packaging and shipping evidence remain gaps, not invented adverse documents.

Common mistakes

• Using a universal confusion checklist. Apply controlling authority and assign unresolved research.
• Treating registration as the entire merits case. Separate rights evidence, challenged conduct, confusion, and defenses.
• Combining variants and territories. Split materially different presentations, periods, and geographic uses.
• Counting inquiries as proven confusion. Preserve exact communications, deduplicate reports, and investigate exposure.
• Recording only favorable material. Place contradictory sources beside supporting proof and explain their effect.
• Calling an empty cell “no evidence.” State whether collection, review, or investigation remains incomplete.

Final quality check

• Every pleaded theory and asserted defense has a row or explained exclusion.
• Material propositions identify the relevant mark, use, product, period, and territory.
• Authorities and burdens are verified or expressly assigned for research.
• Source IDs, pinpoints, versions, and date types reconcile with underlying materials.
• Adverse sources, duplicates, and alternative explanations remain visible.
• Provenance, witness knowledge, and evidentiary purposes are distinguished from inference.
• Every material gap is resolved or assigned with a completion condition.
• The reviewed version states its date and purpose without implying admissibility.

Complete the workflow with DecoverAI

DecoverAI is the Legal Intelligence Platform for litigation and transactions. Its document review, evidence analysis, chronology, and deposition preparation capabilities can support assessment of disputed uses and witness accounts. Keep the matrix as counsel’s work product and retain legal judgment over authorities, inferences, and evidentiary decisions. Explore trial preparation and the chronology viewer, or book a demo to discuss this workflow.

Frequently asked questions

Should each confusion factor receive a separate row?

When useful under controlling authority, yes. Add subrows where uses or periods produce materially different evidence. Do not replace legal analysis with a numerical tally of favorable rows.

How should counsel record a missing registration?

Identify the asserted theory and missing rights evidence. Section 1125(a)(1)(A) does not textually require federal registration, but counsel must still analyze the actual claim and proof. 15 U.S.C. § 1125(a)(1)(A).

Can one document support both sides?

Yes. Link it in both columns with distinct explanations. An email may suggest affiliation confusion while showing reliance on an unrelated reviewer rather than the challenged listing. Preserve both propositions without overstating either.

When should the matrix be updated?

Update affected rows when production, testimony, corrected dates, or verified authorities change the assessment. Preserve reviewed versions and explain material changes so counsel can distinguish new evidence from revised interpretation.

Sources

• 15 U.S.C. § 1114 — Registered-mark infringement
• 15 U.S.C. § 1125 — False designations and related claims
• 15 U.S.C. § 1115 — Registration evidence and defenses
• Federal Rules of Evidence — Rules 107, 602, 801–802, 901, and 1006

This guide is general information about legal workflows, not legal advice for any matter. It was drafted and reviewed with AI assistance. The worked example is fictional. Contract rights and procedure depend on the governing law, the actual wording, and the facts, so check the cited sources and the rules that apply in your jurisdiction before relying on it.