Sending an Effective Cease-and-Desist Letter
By Casey Scott McKay ·
A well-drafted cease-and-desist letter resolves most trademark disputes without a lawsuit, and this guide is the working manual for writing one that does. It runs the full sequence — deciding whether a letter is the right instrument at all, confirming ownership and priority before you assert anything, investigating the recipient, building a claim ledger alongside an honest defense ledger, and choosing your forum before you choose your words. It treats declaratory-judgment exposure under MedImmune, Inc. v. Genentech, Inc., 549 U.S. 118 (2007) and personal jurisdiction founded on the letter itself as design constraints rather than afterthoughts, and explains the file-but-do-not-serve gambit that Fed. R. Civ. P. 4(m) makes possible. It gives model language for all nine parts of the letter, three temperature settings with rules for picking one, a cost-and-timeline table for every rung of the ladder, and a decision tree for the fork that matters most. It carries a single annotated example — a Minneapolis bag maker against a two-person Oregon shop — from watch notice through signed settlement, and closes with what to do when the recipient ignores you, sues you first, or posts your letter online.
IP and Technology > Trademarks | Guide | Published 15 January 2026 - Updated 9 July 2026 | Casey Scott McKay - marksy.us
Summary. A well-drafted cease-and-desist letter resolves most trademark disputes without a lawsuit, and this guide is the working manual for writing one that does. It runs the full sequence: deciding whether a letter is the right instrument at all, confirming ownership and priority before you assert anything, investigating the recipient, building a claim ledger next to an honest defense ledger, and choosing your forum before you choose your words. Declaratory-judgment exposure under MedImmune, Inc. v. Genentech, Inc., 549 U.S. 118 (2007) and personal jurisdiction founded on the letter itself are treated as design constraints, not afterthoughts. You get model language for all nine parts of the letter, three temperature settings with rules for picking one, a cost-and-timeline table for every rung of the ladder, and a decision tree for the fork that matters most. A single annotated example runs from watch notice to signed settlement, and the guide closes with what to do when the recipient ignores you, sues you first, or posts your letter online.
Keywords: cease and desist letter · trademark demand letter · declaratory judgment risk · medimmune · personal jurisdiction from demand letters · first-to-file rule · rule 408 settlement communications · litigation hold · actual notice under section 1111 · likelihood of confusion analysis · demand ladder · sell-off period · coexistence agreement · trademark bullying · octane fitness fee exposure · covenant not to sue · extension of time to oppose · pre-suit investigation · model demand letter language · escalation and follow-up
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