Why trademarks matter for domains
A great domain that infringes someone's trademark can be taken from you through a UDRP or lawsuit, wiping out your investment. Before you buy, check whether the name is trademarked in your country and industry. Owning the domain doesn't grant you the right to use it as a brand.
How to check before you buy
Search the USPTO (or your local trademark office) and the WIPO Global Brand Database for the core word. Look for live marks in related classes. Also check the Trademark Clearinghouse and run a simple web search to see how the name is already used. A few minutes of research prevents costly disputes.
UDRP and reverse hijacking
The UDRP is the standard process for challenging abusive domain registrations. If you register a domain in bad faith to profit from someone's mark, you can lose it. Conversely, trademark owners sometimes attempt 'reverse hijacking' of domains they have no real claim to — keeping records of your good-faith use helps you defend ownership.
When in doubt, get advice
For high-value names, a quick consultation with a domain/IP attorney is cheap insurance. They can confirm clearance, draft a purchase agreement, and help you respond to any cease-and-desist. Spending a little upfront beats losing a domain you've built a brand on.