Once the examining attorney clears the application and indicates that it is allowable for registration on the Principal Register the Mark is published in the Official Gazette. Each week an Official Gazette is published which contains drawings of trademark approved for publication. The United States Patent and Trademark Office (USPTO) sends a Notice of Publication to the applicant stating the date of publication. Any party who believes it may be damaged by registration of the mark has thirty (30) days from the publication date to file either an opposition to registration or a request to extend the time to oppose. If no opposition is filed or if the opposition is unsuccessful, a Certificate of Registration will issue for applications based on use, or on a foreign registration under §44, or a Notice of Allowance will issue for intent-to-use applications.