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Question:
Where a restriction (including an election of species) requirement was made in an application and applicant permitted the elected invention to issue as a patent without filing a divisional application on the non-elected invention(s) or on non-claimed subject matter distinct from the elected invention, can the non-elected invention(s) and non-claimed, distinct subject matter be recovered by filing a reissue application?
Answer:
Where a restriction (including an election of species) requirement was made in an application and applicant permitted the elected invention to issue as a patent without filing a divisional application on the non-elected invention(s) or on non-claimed subject matter distinct from the elected invention, the non-elected invention(s) and non-claimed, distinct subject matter cannot be recovered by filing a reissue application.
Chapter Details:
The answer to this question can be found in chapter 800 of the MPEP. This chapter covers Restriction in Applications Filed Under 35 U.S.C. 111; Double Patenting.
The answer is from the 9th Edition, Revision 07.2022, Published February 2023. Depending on future changes to the MPEP, the question and answer may or may not be applicable in later Editions or revisions.
Section Summary:
This question and answer comes from section 803.05 of the MPEP. The following is a brief summary of section 803.05.
803.05 Reissue Application Practice
Restriction practice relating to reissue applications is governed by 37 CFR 1.176(b) which specifies that restriction may only be required between the invention(s) of the original patent claims and previously unclaimed invention(s) set forth in new claims added in the reissue application. The claims of the original patent must not be restricted as being directed to two or more independent and distinct inventions and must be examined together.