Internet domain names raise some unique trademark issues. A mark comprised of an Internet domain name is registrable as a trademark or service mark only if it functions as an identifier of the source of goods or services.
See also Goodyear, 128 U.S. at 602 (the incorporation of a term with no source-indicating function into an otherwise generic mark cannot render it registrable). For example, if a proposed mark is composed of merely descriptive term(s) combined with a TLD, the examining attorney must refuse registration on the Principal Register under Trademark Act §2(e)(1), 15 U.S.C. §1052(e)(1), on the ground that the mark is merely descriptive. See TMEP §1215.04.
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