When a company goes bankrupt, it will be liquidated, while intellectual property rights such as patents and trademarks belong to the company and will also be liquidated. If the patent right is transferred according to law, the patent right shall be inherited by the assignee; If the patent right still exists after liquidation and the original patent company goes bankrupt and will be cancelled, the owner of the patent right can be changed to the personal controller of the bankrupt company, and the patent right is still valid as long as the annual fee is paid on time.
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