What is a requirement for recording an assignment at the PTO?

To successfully record an assignment at the USPTO, it is crucial that the document identifies all relevant patents or applications involved in the transfer of rights. Specifically, the assignment must include a list of all patents and/or applications by their respective numbers to ensure clarity regarding which specific intellectual property is being transferred. This requirement helps the USPTO maintain accurate and comprehensive records, facilitating the verification of ownership and rights related to patent applications or issued patents.

Recording the assignment with the patent/application numbers allows for proper association of the patent rights with the new owner and aids in protecting the rights of both parties involved in the transaction. Without this information, the assignment may not be adequately recognized or processed by the PTO.