A: There are many cases in which a trademark is invalid without renewal, and there are also many cases in which a trademark is recovered through disputes after registration. Doesn't mean you can't win the lawsuit. It mainly depends on whether your trademark has been used for many years and whether it has formed certain commercial activities and popularity. If you haven't used this trademark for 10 years, then your hope is not great. 2. It depends on whether the other party is maliciously squatting, such as your customers, your partners and business partners. These are all favorable evidences. You can check whether someone has registered your trademark and then raise an objection. Re-apply yourself. If there is enough evidence, there is still hope. trademark renewal