The utility model patent certificate is lost. How much does it cost to apply for a copy?

1. If the patent certificate is lost, it cannot be reissued. A patent has more than one patentee, and other patentees need a patent certificate before they can request a copy of the patent certificate. The number of patent certificates issued for the same patent right cannot exceed the total number of * * * same obligees at the time of issuing the certificate.

2. The patent certificate can only prove the legal status of the patent on the date of authorization. Theoretically, the loss of the certificate has no effect on the patent transfer.

What you need is to ask China National Intellectual Property Administration for a copy of the patent register. You can find it on the "Home Page" of China National Intellectual Property Administration's website. Special column > public inquiry service of patent examination process > handling guide > see "file copying" column for specific handling requirements.