I filed a utility provisional patent application less than 1 year ago. If within 1 year of the utility prov appl filing date I also file design patent application(s) for the same idea, will the utility provisional application's filing date also be considered for "first to file" for the design application for the same idea?
(I have already presented my utility provisional application to some manufacturers.)
No.
A design patent application cannot claim priority to a provisional patent application, per 35 USC § 172:
The right of priority provided for by subsections (a) through (d) of section 119 of this title and the time specified in section 102(d) shall be six months in the case of designs. The right of priority provided for by section 119(e) of this title [which covers provisional applications] shall not apply to designs.
This is stated more clearly at MPEP § 1504.10.
Design applications may not make a claim for priority of a provisional application under 35 U.S.C. 119(e).
