Once a trademark has been federally registered for at least five years, it may be possible for the owner to file a Declaration of Incontestability, if certain conditions are met. This optional Declaration is strongly recommended by trademark counsel in most situations, as the acceptance of the Declaration by the United States Patent and Office will afford many significant benefits to the Registrant.
If your trademark has been federally registered for at least five years and you require assistance in filing a Declaration of Incontestability: