What is "use in commerce"?

(USPTO) A specimen is an actual example of how you are using the mark in commerce on or in connection with the identified goods and/or services. This is not the same as the drawing of the mark, which merely represents what you are claiming as the mark.

What is a proper specimen for use of a mark on goods (products)?

Normally, a specimen for a mark used on goods shows the mark on the actual goods or packaging for the goods. You may submit a tag or label for the goods; a container for the goods; a display associated with the goods; or a photograph of the goods that shows use of the mark on the goods.

Invoices, announcements, order forms, bills of lading, leaflets, brochures, publicity releases, letterhead and business cards generally are NOT acceptable specimens for goods.

What is a proper specimen for use of a mark with services?

A specimen for a mark used in connection with services must show the mark used in the sale or advertising for the services. You may submit a sign; a brochure about the services; an advertisement for the services; a business card or stationery showing the mark in connection with the services; or a photograph showing the mark as used in rendering or advertising the services. There must be some reference to the type of services rendered on the specimen, i.e., not just a display of the mark itself. For example, if the mark sought to be registered is "XYZ," a business card that only shows the mark "XYZ" would not be acceptable. A business card that states "XYZ REAL ESTATE" would be acceptable.