Is reduction to practice necessary to be considered an inventor?
According to the MPEP, reduction to practice is generally not required to be considered an inventor. The focus is on conception of the invention. The MPEP states:
“Difficulties arise in separating members of a team effort, where each member of the team has contributed something, into those members that actually contributed to the conception of the invention, such as the physical structure or operative steps, from those members that merely acted under the direction and supervision of the conceivers.” MPEP 2109
The MPEP further clarifies:
“[T]here is no requirement that the inventor be the one to reduce the invention to practice so long as the reduction to practice was done on his behalf.” In re DeBaun, 687 F.2d 459, 463, 214 USPQ 933, 936 (CCPA 1982)
This means that an individual who conceives the invention but doesn’t physically create or test it can still be considered an inventor, as long as others carry out those steps under their direction.
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