This UpLaw reference traces a U.S. trademark from a naming idea to a registration renewed decades later, treating the process as a single connected lifecycle rather than a one-time filing. It maps the distinctiveness spectrum from Abercrombie & Fitch Co. v. Hunting World, explains why clearance searches must reach beyond the federal register into common-law and marketplace use, and lays out the strategic choice between use-based and intent-to-use filing bases. It walks the examination gauntlet in detail, covering the Section 2(d) DuPont likelihood-of-confusion refusal, the Section 2(e) descriptiveness family, and the specimen rules that sink more applications than any doctrine, then follows the mark through publication, TTAB opposition, the Notice of Allowance and Statement of Use, and the certificate of registration. It closes with the post-registration calendar under Sections 8, 15, 9, and 71, the Trademark Modernization Act's shorter response clock and new deadwood tools, and the enforcement and licensing work that turns a certificate into a defensible asset. Worked hypotheticals and primary authority appear throughout. It is general information, not legal advice.