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1. Prior Communications: Reference to any previous attempts to resolve the matter, used when there has been prior contact

2. Economic Impact: Description of financial damage caused by infringement, included when quantifiable losses exist

3. Settlement Terms: Proposed terms for amicable resolution, included when willing to negotiate

4. Confidentiality Notice: Statement regarding confidentiality of the communication, used in sensitive cases

5. Reservation of Rights: Statement preserving additional legal rights, included in complex cases

1. Patent Documentation: Copies of patent certificates and relevant pages showing claims being infringed

2. Evidence of Infringement: Photographs, technical documentation, or other proof of infringing activities

3. Chain of Title: Documents proving patent ownership if the sender is not the original patentee

4. Market Evidence: Documentation of the infringing products in the market, including marketing materials or sales information