obvious to tryThe validity of a patent can be challenged by attempting to show that what the inventor did would have been obvious to try based on the prior art, and…
ObviousnessA characteristic that makes an invention predicable to a person having ordinary skill in the art who has knowledge of all of the prior art.
Offer to SellAn activity that can bar obtaining a patent in some jurisdictions if the activity occurs a sufficient period of time before a patent application on the…
office actiona letter from a trademark examining attorney setting forth the legal status of a trademark application.
Official GazetteA publication of the USPTO in which new patents and trademarks are announced. Published weekly in two editions, one for patents and one for trademarks.
Old ApplicationAn application that, having been acted on by an Examiner, has, in turn, been acted on by the applicant. MPEP 203.03.
One-Year Grace PeriodThe one-year period that starts on the date that an invention is used publicly, offered for sale, patented or published anywhere in the world during which…
Open for Public InspectionThe date upon which a patent application is first made available to the public.
Opinion, PatentabilityAn opinion offered by a patent agent or a patent attorney as to whether a claimed invention is likely to be deemed patentable by a patent office in view…
Opinion, ValidityAn opinion offered by a patent agent or a patent attorney as to whether the claims of an issued patent would likely be upheld by a court in view of the…
OppositionA procedure available in most countries (but not the U.S.) whereby a third party may request that a patent not issue or that an issued patent be…
ordinary skill in the artThe level of technical knowledge, experience, and expertise possessed by the run-of-the-mill or ordinary engineer, scientist, or designer in the…
Original Application"Original" is used in the patent statute and rules to refer to an application which is not a reissue application.