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Can a U.S. reissue application introduce new matter?

3/31/2018

 
No.  MPEP 1411 specifically states:  "Any change in the patent made via the reissue application should be checked to ensure that it does not introduce new matter. Note that new matter may exist by virtue of the omission of a feature or of a step in a method. See United States Industrial Chemicals, Inc. v. Carbide & Carbon Chemicals Corp., 315 U.S. 668, 53 USPQ 6 (1942)."

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