Express Abandonment Law and Legal Definition

Express abandonment is a patent application that can be expressly abandoned by way of filing a written declaration of abandonment identifying the application in the United States Patent and Trademark Office (PTO). Express abandonment comes into effect when an appropriate official of the PTO takes action thereon. Express abandonment of the application shall not be recognized before the date of issue or publication. However, it shall be recognized if it is actually received by appropriate officials in time. Abandonment can be of the invention or of an application.