Patent Terms Glossary

DO

Definition:
Designated Office - the national Office or intergovernmental organization of or acting for the Contracting State designated by the applicant under Chapter I of the Patent Cooperation Treaty.

Serial Number

Definition:
A number assigned to a patent application when it is filed. A serial number is usually used together with a two digit series code to distinguish between applications filed at different times.

DTD

Definition:
Document type definition - a format specification file that accompanies documents prepared according to SGML (standard generalized markup language), including XML (extensible markup language).

Express Mail Mailing Label

Definition:
Patent correspondence delivered to the USPTO via the "Express Mail Post Office to Addressee" service of the USPS which is considered filed in the Office on the date of deposit with the USPS.

Certificate Of Registration

Definition:
Official document from the USPTO evidencing that a mark has been registered.

IC

Definition:
International Class - class(es) assigned to a mark under the International Classification of Goods and Services (Nice Agreement); used in the United States since 1 September 1973

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