Trademark Clearance Knockout Analysis
After a knockout or preliminary search on a proposed brand, when you need to triage the hits, decide whether to proceed to a full search, and tell the client which marks matter.
Before a client invests in a brand, someone has to ask whether the name is likely to collide with an existing mark. A knockout search is the fast first screen, and the work that follows is triage: which of the dozens of hits actually matter, how serious each one is, and whether the mark is worth a full search. Doing it carefully saves clients from rebranding later, and doing it quickly keeps the launch on schedule.
This prompt pastes the search results first, then describes the proposed mark, the client's goods and services, trade channels, purchaser care, geography and the scope of the search. For each potentially conflicting mark, Claude works through similarity of the marks, relatedness of goods, channels of trade and the strength of the cited mark, then gives a high, medium or low risk rating with reasons. It ends with a summary table, an excluded list and the follow-up searches and use investigations needed.
This is triage, not a clearance opinion. Claude sees only the results you paste, cannot confirm current registration status or actual use, and is told not to cite cases unless you supply them. A search's scope limits what any analysis can say, and common-law users may not appear at all. The attorney decides whether to proceed, verifies status in USPTO records, and gives the client any opinion on clearance.
The Prompt
<search_results> [PASTE THE KNOCKOUT OR SEARCH REPORT RESULTS: MARK, OWNER, STATUS, REGISTRATION OR SERIAL NUMBER, GOODS AND SERVICES, CLASS, AND ANY USE INFORMATION] </search_results> <proposed_mark> Proposed mark: [MARK, AND WHETHER WORD MARK OR DESIGN] Client: [CLIENT NAME] Goods and services: [SPECIFIC DESCRIPTION] Classes: [CLASSES] Channels of trade and customers: [e.g., direct-to-consumer online; sold to hospitals] Price point and purchaser care: [e.g., low-cost impulse purchase; expensive B2B] Planned geography: [e.g., US nationwide; specific states] Search scope: [WHAT DATABASES AND SOURCES THE SEARCH COVERED] </proposed_mark> Triage these results for a preliminary knockout opinion to the attorney. For each potentially conflicting mark, give: 1. The mark, owner, status and goods or services, quoted from the results. 2. Similarity of the marks: appearance, sound, meaning and commercial impression. 3. Relatedness of the goods and services. 4. Channels of trade and purchasers. 5. Strength of the cited mark: whether it appears descriptive, suggestive or arbitrary for its goods, and whether similar marks coexist in the results (crowded field). 6. Risk rating: High / Medium / Low, with a two-sentence reason. Then provide: - A summary table: Mark | Owner | Status | Class | Risk | Key reason. - Marks you excluded as plainly unrelated, in one list. - Follow-up needed: full search, common-law and web searches, use investigations for specific marks, status checks on marks that look abandoned, and anything the search scope did not cover. Apply the likelihood-of-confusion factors used by the USPTO and by [CIRCUIT OR FORUM]. Do not cite cases unless I paste them. Do not give a final clearance opinion; state what remains unknown. This analysis is a draft for attorney review, and all status information should be verified in USPTO records.
Example Output
A factor-by-factor assessment of each potentially conflicting mark with a high, medium or low risk rating, a summary table, an excluded list and a follow-up search plan.
Illustrative example — names, figures, and facts are fictional.
KNOCKOUT TRIAGE (DRAFT) Proposed mark: TIDEWELL (word) | Client: Arbor Lane Foods, Inc. (fictional) Goods: Ready-to-drink herbal iced tea, Class 30 (tea-based beverages; confirm if not tea-based) | Channels: grocery and online DTC | Low price, impulse purchase 1. TIDEWELL BREWING (fictional result) Owner: Pellmont Ales LLC | Status: Registered | Class 32: "beer" Similarity: Identical dominant term; "BREWING" is descriptive for beer. Goods: Beer and iced tea are both beverages; relatedness depends on evidence that the same sources offer both. Unknown. Channels: Overlapping grocery channels likely. Strength: TIDEWELL appears arbitrary for beer; no similar marks in results. RISK: HIGH. Identical dominant term on beverages likely sold to the same impulse purchasers. Different classes do not by themselves avoid a conflict. 2. TIDEWATER WELLNESS (fictional result) Owner: Pinegate Health Co. | Status: Registered | Class 5: "dietary supplements" Similarity: Shares TIDE and WELL elements but has a different overall impression. Goods: Supplements versus beverages; some overlap if marketed as functional drinks. RISK: MEDIUM. Depends on whether client's tea makes wellness claims. 3. WELLTIDE (fictional result) Owner: Individual | Status: Application, appears abandoned | Class 3: "bath salts" RISK: LOW. Different goods; status should be confirmed. SUMMARY Mark | Owner | Status | Class | Risk | Key reason TIDEWELL BREWING | Pellmont Ales | Reg. | 32 | High | Identical term, beverages TIDEWATER WELLNESS | Pinegate Health | Reg. | 5 | Medium | Partial overlap, wellness positioning WELLTIDE | Individual | Abandoned? | 3 | Low | Unrelated goods EXCLUDED AS UNRELATED: TIDEWELL MARINE (boat repair); TIDY WELL (plumbing). FOLLOW-UP - Full search including state registrations and common-law sources (scope covered federal records only). - Use investigation: is Pellmont Ales selling non-alcoholic beverages? - Confirm WELLTIDE status in USPTO records. Not a clearance opinion. Draft for attorney review.
Tips
- •Describe the client's goods and services specifically. 'Software' produces very different relatedness calls than 'scheduling software for veterinary clinics.' Class numbers alone do not decide relatedness.
- •Include the search scope so Claude can list what was not searched, such as state registrations or common-law use.
- •Verify the status of any mark that matters directly in USPTO records. Search reports can be out of date.
- •Paste circuit-specific factor language if you want the analysis framed in your forum's terms; otherwise Claude uses the factors generically.
- •Never send the output as a clearance opinion. It is a draft for attorney review, and any authority cited later must be verified.
Frequently Asked Questions
Can Claude run the trademark search itself?
This prompt assumes you already have search results from a search tool, a search vendor or USPTO records. Claude analyzes what you paste. It cannot confirm that the results are complete or current. Paste the search scope so the analysis can tell you what was not covered, and check the status of any important mark directly in USPTO records.
Why will Claude not give a final clearance opinion?
A clearance opinion depends on a full search, common-law use, the client's risk tolerance and the attorney's judgment about the forum's case law. A knockout analysis only screens for obvious conflicts. The prompt keeps Claude in the triage role and asks it to state what remains unknown, so the attorney can decide whether to clear, proceed to a full search, or recommend a different mark.
Which likelihood-of-confusion factors does it apply?
The prompt directs Claude to the core factors common to USPTO and court analysis: similarity of the marks, relatedness of goods and services, channels of trade and purchasers, purchaser care, and strength of the cited mark. Each circuit frames its test somewhat differently. If you want your forum's exact formulation, paste it into the prompt, and verify any authority before relying on it.
How should I handle design marks?
Describe the design elements in words in the search results, including any design codes, and say whether the proposed mark is a word mark or includes a logo. Claude cannot compare images it has not been given. For marks where the design matters, attach or describe the images and expect the attorney to make the visual comparison directly.
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