X204 Patent and Trademark Prosecution Post-Issuance (Patent Maintenance and Trademark Renewal) Fees, Excluding Prosecution Application and Opposition Fees
Any Patent and Trademark Prosecution official fees paid to governmental and quasi-governmental entities in order to maintain an issued patent or trademark in force, including those paid to Patent and Trademark Offices, the World Intellectual Property, Notaries, consulates, and embassies. Excludes prosecution application (X203) or opposition fees (X205).