Many large cities also have associations of patent attorneys and agents that may be consulted. Disposition The Disclosure Document will be preserved by the PTO for two years after its receipt. After that time, it will be destroyed unless it is referred to in a separate letter in a related patent application filed within the two-year period. Acknowledgment of such letters will be made in the next official communication or in a separate letter from the Patent and Trademark Office. Documents without the full fee will be returned.
Fees are subject to change annually.
Publications such as General Information Concerning Patents may be inspected at the PTDLs. This service provides customers with a completed transaction on-site, eliminating the wait for PTO notification of acceptance. Original documents are sent to the PTO for processing and retention.