Can dictionary definitions be added to a patent application without being considered new matter?
Generally, adding dictionary or art-recognized definitions known at the time of filing an application may not be considered new matter. However, there are important considerations. The MPEP Section 2163.07 states:
“The mere inclusion of dictionary or art recognized definitions known at the time of filing an application may not be considered new matter. If there are multiple definitions for a term and a definition is added to the application, it must be clear from the application as filed that applicant intended a particular definition, in order to avoid an issue of new matter and/or lack of written description.”
This means that while adding known definitions is often acceptable, applicants must ensure that the added definition aligns with the intended meaning in the original application to avoid new matter issues.
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