A Statement of Incontestability is one filed by the owner of a mark registered on the Principal Register.  The statement serves as evidence that the mark and/or its registration is valid and that the trademark owner reserves the exclusive right to use the mark on goods and services.  In order for a trademark to meet the requirements of being considered “incontestable,” it must have been used in commerce continuously for at least five years after the registration and must still be in use at the time the Statement of Incontestability is filed.
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