What must be submitted alongside the assignment recordation cover sheet if filing on paper?

In order to effectively record the assignment of a trademark, it is essential to submit a document that shows the transfer of ownership along with the assignment recordation cover sheet. This is because the USPTO requires clear evidence of the change in ownership to officially update the trademark records. The document should detail the specifics of the ownership transfer, such as the parties involved and the date of the transfer. This documentation ensures that the USPTO can verify the legitimacy of the assignment and maintain accurate and up-to-date ownership information.

The need for a document showing transfer of ownership aligns with trademark law, as it emphasizes the necessity of clear proof when transferring rights. Without this evidence, the assignment could not be properly recorded, leading to potential issues regarding trademark rights and future enforcement.

The other choices would not fulfill the requirement for the assignment process. Proof of payment is not a requisite for filing the assignment recordation, as the focus is on the transfer of rights. A letter of intent does not suffice because it does not constitute a formal transfer of ownership and might be more speculative in nature. A receipt of a prior application is also unrelated, as it does not pertain to the assignment itself but rather relates to previous filings. Therefore, the correct answer emphasizes the necessity of proper documentation