Definition
In patent law, novelty is the requirement that an invention be new — that is, not previously known, used, disclosed, or patented — in order to qualify for patent protection. An invention lacks novelty if it was anticipated by the prior art: any single earlier disclosure, publication, patent, or public use that reveals each element of the claimed invention. Novelty is a threshold condition for patentability, distinct from but related to the requirement of non-obviousness. Where novelty fails, the objection is said to be "for want of novelty," and the defect is fatal to the patent claim.
The term also appears, less commonly, in contexts outside patent law — including contracts and equity — to describe the quality of being new or unprecedented, though these uses are incidental rather than technical.
Common Language
Modern common usage (Wiktionary): The state of being new or novel; newness. Also, a new product or innovation; colloquially, a small mass-produced trinket.
Historical common usage (Webster's 1913): "The quality or state of being novel; newness; freshness; recentness of origin or introduction."
The common meaning is entirely congenial to the legal concept, but the gap lies in precision. In ordinary language, "novelty" is a matter of degree — something can be more or less novel. In patent law, novelty is binary: an invention either anticipates against the prior art or it does not. A single prior disclosure of every claimed element destroys novelty completely, regardless of how recent, obscure, or commercially ignored that disclosure was.
Core Elements
Novelty analysis in patent law turns on anticipation — the question whether a prior art reference discloses every limitation of the claimed invention. For a finding of want of novelty, the following must be established:
Prior art reference: A single prior disclosure — patent, publication, public use, sale, or other prior knowledge — that predates the claim.
Complete disclosure: That reference must disclose every element of the claimed invention. Partial disclosure, requiring combination with a second source, is an obviousness question, not anticipation.
Identity of invention: The prior disclosure must describe the same invention, not merely something similar or related.
Availability: The prior art must have been publicly available or accessible, not merely in private hands, before the critical date.
The critical date — which determines what counts as prior art — has varied by statute and jurisdiction, and its shifting definition is a significant research trap in historical patent materials.
Why It Matters in Research
Novelty occupies the center of patent law disputes across virtually every historical period, and researchers face several traps.
First, the vocabulary has drifted. Early patent authorities — including the historical dictionaries here — treat "want of novelty" as nearly synonymous with the invalidity of a patent claim, without carefully distinguishing novelty (anticipation) from what modern doctrine calls non-obviousness or inventive step. The merger of these concepts in older sources can mislead researchers reading historical patent opinions or treatises.
Second, the statutory definition of prior art — and therefore what can destroy novelty — changed substantially across the history of U.S. patent law. The 1952 Patent Act, the America Invents Act of 2011, and their predecessors each define prior art differently. A "want of novelty" objection in an 1890 case operates under different rules than the same phrase in a 2015 case. Researchers should not assume continuity.
Third, the shift from a first-to-invent to a first-inventor-to-file system under the America Invents Act altered which disclosures count as prior art and introduced a grace period structure that differs from the prior regime. Historical corpus materials predating 2013 reflect the old system; post-2013 materials reflect the new one. These frameworks are not interchangeable.
Fourth, Anderson's Dictionary entry for this term is clearly a mis-assignment — the text reproduced under "Novelty" describes notice requirements and has no connection to the patent concept. Researchers relying on Anderson's should treat this entry as unusable for patent research purposes.
Historical Dictionary Support
The historical dictionaries converge on a single, narrow definition: novelty in law is a patent law concept, and its failure — "want of novelty" — is a fatal objection to a patent grant or claim. Black's (1st and 2nd editions) and Rapalje & Lawrence are in complete agreement on this point, and their entries are nearly identical. Rapalje & Lawrence adds the useful emphasis that the objection is "fatal," distinguishing it from defects that might be corrected or waived.
Bouvier's cross-references to patent law without elaboration, contributing nothing independently. Anderson's entry is, as noted above, an apparent editorial error — the text is a fragment from a notice-law definition that has nothing to do with novelty or patents.
None of the historical sources engages with the distinction between novelty and non-obviousness, which is understandable given that non-obviousness as a formal statutory requirement postdates most of these works. Researchers should not infer from the historical sources that "want of novelty" was the only invalidity ground — obviousness-type reasoning appeared in early case law under different labels, including "want of invention" or "want of patentable novelty."
Jurisdictional Note
In U.S. patent law, novelty is governed by federal statute and is uniform nationally, but the applicable standard depends on the filing date of the patent at issue — pre- or post-America Invents Act. International patent systems (EPO, PCT) apply a strict absolute novelty standard with no grace period, which differs materially from the U.S. grace period provisions. Research crossing jurisdictional lines requires care in applying the correct novelty framework.
Encyclopedia Cross-Reference
See Law Mind Encyclopedia: Patent Law — Patentability Requirements; Prior Art and Anticipation.