The UDRP (Uniform Domain-Name Dispute-Resolution Policy) is ICANN's administrative process for resolving disputes over domain names that infringe a trademark. It is administered by approved providers — chiefly WIPO and the Forum (formerly NAF) — and applies to virtually all gTLDs, including .com.
To prevail, a complainant must show the domain is identical or confusingly similar to a mark they hold rights in, that the registrant has no legitimate interest, and that the domain was registered and used in bad faith. A successful UDRP can order the domain transferred to the complainant or cancelled.
Unlike the faster URS, which only suspends a domain, the UDRP gets you ownership of the name. See the guide on UDRP vs URS. This is general information, not legal advice.