FAQs Patent Questions

Question:The patent law specifies that its subject matter must be useful, meaning it is able to perform its intended purpose.

Answer:
The patent law specifies that the subject matter must be “useful.” The term “useful” in this connection refers to the condition that the subject matter has a useful purpose and also includes operativeness, that is, a machine which will not operate to perform the intended purpose would not be called useful, and therefore would not be granted a patent.

Question:Color drawings are allowed after a petition is granted stating why the colored drawing is needed

Answer:
The Office will accept color drawings in utility or design patent applications and statutory invention registrations only after granting a petition filed under this paragraph explaining why the color drawings are necessary.

Question:Amendment documents that changes an existing claim must include a complete listing of all claims presented

Answer:
Any amendment document that includes a change to an existing claim, cancellation of an existing claim or addition of a new claim, must include a complete listing of all claims ever presented.

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