What should a good notice letter include?

What makes the accusation understandable?

Identify the relevant patent and product or activity, explain the asserted connection, and provide a contact route. A claim chart may help explain the position, but the degree of detail depends on the purpose and circumstances. Do not equate merely sending a patent number with satisfying every legal notice requirement.

What matters for actual notice under section 287?

Lubby Holdings v. Chung explains that actual notice identifies the patent and the activity believed to infringe, together with a proposal to stop the infringement, by license or otherwise. Awareness that a patent exists is insufficient. That damages rule is distinct from proving infringement or willfulness.

What should be checked before sending?

Check ownership, the accused version, the factual basis, the requested response, and possible declaratory-judgment consequences under MedImmune. Use a professional tone and avoid promising litigation or relief the sender has not evaluated. These are drafting considerations, not a universal template guaranteeing an effective notice.