Can a patent application be filed if one joint inventor refuses to sign?
Yes, a patent application can be filed even if one joint inventor refuses to sign, provided certain conditions are met. According to MPEP 409.03(a): “Pre-AIA 37 CFR 1.47(a) and pre-AIA 35 U.S.C. 116, second paragraph, requires all available joint inventors to file an application ‘on behalf of’ themselves and on behalf of a joint inventor…
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