How extensive should an interference search be in terms of patent classifications?
An interference search should be comprehensive and not limited to the primary classification of the application. The MPEP 2304.01(a) provides clear guidance on the scope of the search: “The search for interfering applications must not be limited to only the classes or subgroups in which the application is classified, but must be extended to all…
Read MoreHow comprehensive is the USPC Index?
The USPC Index, while useful, should not be considered exhaustive. According to MPEP 902.01(a): “The index is used as an initial entry into the system and should not be considered exhaustive. All appropriate class schedules should be scanned for specifically related subclasses, and the definitions and associated notes of the pertinent classifications should also be…
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