Is it possible to file a patent application when at least one Inventor refuses to sign the Declaration and Power of Attorney form?
Yes, it is possible to file a patent application when an inventor(s) refuses to sign Declaration and Power of Attorney form. Generally the person most knowledgeable about the facts and circumstances about the refusal of the non-signing inventor(s) should mail, via certified mail return receipt requested, a copy of the patent application?including the specification, clams, abstract, drawings and Declaration and Power of Attorney form?to each such inventor(s) at such inventor(s) last known address. The Declaration and Power of Attorney form must be signed by any remaining inventor(s), both on behalf of himself/herself/themselves as well as on behalf of each non-signing inventor(s). The person most knowledgeable about the facts and circumstances about the non-signing inventor(s) must also submit a Statement setting forth the attempt(s) to reach the non-singing inventor(s) and attach to such Statement evidence substantiating the refusal of the non-signing inventor(s) to sign the applicatio