If a trademark is declared invalid after transfer, the trademark transfer will not be effective. A registered trademark declared invalid will be announced by the Trademark Office, and the exclusive right to the registered trademark will be deemed to have ceased to exist from the beginning. Decisions or rulings declaring the registered trademark invalid, judgments, rulings, and mediation documents on trademark infringement cases made and executed by the People's Court before the invalidation, and decisions on handling trademark infringement cases made and executed by the industrial and commercial administration departments, as well as The executed trademark transfer or licensing contract does not have retroactive effect. However, compensation shall be provided for losses caused to others due to the bad faith of the trademark registrant. "Trademark Law of the People's Republic of China" Article 44 A registered trademark violates the provisions of Article 4, Article 10, Article 11, Article 12 and Paragraph 4 of Article 19 of this Law , or the registration was obtained by deception or other improper means, the Trademark Office shall declare the registered trademark invalid; other units or individuals may request the Trademark Review and Adjudication Board to declare the registered trademark invalid. When the Trademark Office makes a decision to declare a registered trademark invalid, it shall notify the parties concerned in writing. If the party concerned is dissatisfied with the decision of the Trademark Office, he may apply to the Trademark Review and Adjudication Board for review within fifteen days from the date of receipt of the notice. The Trademark Review and Adjudication Board shall make a decision within nine months from the date of receipt of the application and notify the parties in writing. If there are special circumstances that require an extension, it can be extended for three months with the approval of the industrial and commercial administration department of the State Council. If the party concerned is dissatisfied with the decision of the Trademark Review and Adjudication Board, it may file a lawsuit with the People's Court within thirty days from the date of receipt of the notice. If other units or individuals request the Trademark Review and Adjudication Board to declare a registered trademark invalid, the Trademark Review and Adjudication Board shall, after receiving the application, notify the relevant parties in writing and file a reply within a time limit. The Trademark Review and Adjudication Board shall make a ruling to maintain the registered trademark or declare the registered trademark invalid within nine months from the date of receipt of the application, and notify the parties in writing. If there are special circumstances that require an extension, it can be extended for three months with the approval of the industrial and commercial administration department of the State Council. If the party concerned is dissatisfied with the ruling of the Trademark Review and Adjudication Board, it may file a lawsuit with the People's Court within thirty days from the date of receipt of the notice. The people's court shall notify the other party in the trademark adjudication procedure to participate in the litigation as a third party. Article 57 Anyone who commits any of the following acts shall infringe upon the exclusive right to use a registered trademark: (1) Using the same trademark as the registered trademark on the same product without the permission of the trademark registrant; (2) Without the permission of the trademark registrant; With the permission of the trademark registrant, a trademark similar to the registered trademark is used on the same product, or a trademark identical or similar to the registered trademark is used on similar products, which is likely to cause confusion; (3) Selling products that infringe the exclusive rights of the registered trademark (4) Forging or manufacturing registered trademarks of others without authorization or selling counterfeit or unauthorized registered trademarks; (5) Changing the registered trademark without the consent of the trademark registrant and putting the goods with the replaced trademark back on the market. ; (6) Intentionally providing convenient conditions for infringing the exclusive rights of others' trademarks and helping others to infringe the exclusive rights of trademarks; (7) Causing other damage to others' exclusive rights to registered trademarks.