The USPTO is cracking down on irregular registrations, with over 10,000 trademarks at risk of invalidation! Cross-border sellers need to urgently self-check, re-record, switch to compliant agencies, and strictly adhere to trademark registration compliance principles. Avoid using fraudulent evidence, honestly declare usage dates, regularly maintain trademarks, and rationally choose agencies. Compliance is the lifeline of cross-border e-commerce, and brand protection is urgent! Sellers must ensure their trademarks are properly registered and maintained to avoid legal issues and protect their brand reputation.