What are the applicant’s responsibilities regarding models, exhibits, or specimens after a patent is granted?

After a patent is granted, the applicant has specific responsibilities regarding models, exhibits, or specimens: The applicant is responsible for retaining the actual model, exhibit, or specimen for the enforceable life of the patent. This responsibility does not apply if: The model or exhibit substantially conforms to the requirements of 37 CFR 1.52 or 1.84.…

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Can the USPTO destroy models, exhibits, or specimens during patent prosecution?

Yes, the USPTO can destroy models, exhibits, or specimens during patent prosecution under certain circumstances. The MPEP 608.03(a) states: ‘The United States Patent and Trademark Office will not return the model, exhibit, or specimen in the following cases: … (B) Where the model, exhibit, or specimen has been destroyed by a process of examination or…

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