Novelty Search

Obviousness (§ 103)

• Novelty (anticipation): a single prior art reference must disclose every element of the claimed invention
• If such a reference exists, the invention is anticipated and not patentable
• Obviousness: a combination of two or more references, which a POSITA would have had motivation to combine, renders the invention obvious

Scope Difference

• A novelty search focuses on the narrower question: does any single reference disclose all elements of the invention?
• A full patentability search covers both anticipation and obviousness

When a Novelty Search Alone is Appropriate

• Early-stage screening: when the inventor wants a quick preliminary assessment before committing to a full patentability search or application
• Budget constraints: novelty searches are faster and less expensive than full patentability searches
• Provisional application preparation: to quickly identify major prior art before establishing a priority date

Limitations

• A clean novelty search does not mean the invention is patentable
• The invention could still be obvious over combinations of references
• A novelty search does not assess claim scope or drafting strategy as deeply as a full patentability search

How a Novelty Search is Structured

• The searcher focuses on finding the closest prior art — references that come closest to disclosing the core inventive concept
• Unlike a full patentability search, the novelty search specifically looks for the combination of features that makes the invention distinctive
• Typical scope: 1-3 hours of database searching
• Report includes the 3-10 closest references found

The Statutory Standard (Post-aia 35 U.s.c. § 102)

• A claimed invention is NOT novel if: (a) it was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date
• (b) described in a patent or patent application with an effective filing date earlier than the claimed invention

Printed Publication

• Includes journal articles, conference papers, internet disclosures, technical manuals, and any publicly accessible document
• A single copy in a library accessible to the interested public qualifies

Public Use

• Using the invention in public without intent to abandon or keep secret
• PUBLIC DISCLOSURE GRACE PERIOD (AIA § 102(b)(1)): IMPORTANT EXCEPTION for US patents: if the inventor publicly disclosed the invention less than 1 year before filing, that disclosure does not count as prior art under § 102
• However, a THIRD PARTY disclosure of the same invention before the inventor's disclosure is prior art

Novelty Analysis Method

• Anticipation requires all elements of the claimed invention to be found in a SINGLE reference
• The reference may be read with its own cross-references incorporated by reference
• Claim charts map each claim element to prior art disclosure

Enablement of the Prior Art

• The prior art reference must also be enabling — it must teach POSITA how to make or use the invention
• A reference that mentions a concept without enabling it may not anticipate

Step 1 — Claim Decomposition

• Before searching, break the invention into its key elements
• List each distinct technical feature
• For the novelty search, focus on the combination of elements that makes the invention distinctive
• Any single reference that teaches all of these elements anticipates

Step 2 — Classification Search (Recommended First Step)

• Identify the CPC (Cooperative Patent Classification) subclass(es) most relevant to the invention
• The CPC has ~250,000 classification symbols organized by technical subject
• Search within the most relevant 2-5 subclasses using keywords and claim elements
• Classification search catches patents with similar content even when different terminology is used

Step 3 — Keyword Boolean Search

• Construct boolean queries using technical terms, synonyms, and related terms
• Search in titles, abstracts, and claims
• Important to vary terminology: inventors often use proprietary or specialized terms while prior art uses common terms

Step 4 — Cross-reference Search

• If relevant patents are found, look at their cited references (backward citations) and patents that cite them (forward citations)
• Forward citation search: find later patents that reference the same foundational work

Step 5 — Inventor and Assignee Search

• Search by inventor names who are known to work in the same technical area
• Search by assignee (company) names known to be active in the field

Step 6 — Non-patent Literature

• For technologies that are published in academic literature before patenting (biotech, chemistry, computer science): search PubMed, IEEE Xplore, SciFinder, ACM Digital Library
• Conference proceedings in the technical field

Result Evaluation

• For each reference found, compare against the claim elements
• Use a claim chart: list each claim element, cite the passage in the reference that might teach it
• If all elements are found in a single reference = anticipating reference = major novelty problem.

Free Databases

• (a) USPTO PatFT (Patent Full Text): full text of issued US patents since 1976
• Images only before 1976
• Boolean search with field codes (TTL=title, ABST=abstract, ACLM=claims, SPEC=description)
• (b) USPTO AppFT (Patent Applications): published US patent applications since 2001
• (c) Google Patents: best interface for beginners
• Covers US, EP, CN, JP, WO
• Includes machine translation
• Full text search
• Related patents feature
• (d) EPO Espacenet: European Patent Office database
• Covers 100+ countries
• Strong for European patent families
• CPC classification browse
• (e) WIPO PatentScope: PCT applications
• National filings from member states
• Translation tools

Commercial Databases (Better for Professional Searches)

• (a) Derwent Innovation (Clarivate): gold standard for professional patent searching
• Enhanced titles and abstracts
• Derwent World Patents Index (DWPI) with standardized chemical terminology
• Family analysis
• (b) Questel Orbit: comprehensive coverage
• Semantic search
• Competitive intelligence
• (c) PatSeer: Asia-Pacific coverage
• Indian patent search
• (d) AcclaimIP: US-focused
• Boolean search with CPC
• Claim analysis

Specialized Databases

• For biotech/pharmaceutical: UniProt
• GenBank (DNA/protein sequences)
• SciFinder (Chemical Abstracts)
• For electronics/software: IEEE Xplore
• ACM Digital Library
• For standards: IEEE Standards
• ISO Standards
• ANSI

Country-specific

• JPO J-PlatPat (Japan)
• CNIPA (China)
• KIPO (Korea)

Practical Note

• For a novelty search, starting with Google Patents for a free preliminary check, then expanding to USPTO's full-text database for careful claim element analysis, covers most US technology adequately
• Adding Espacenet/PatentScope covers international filings.

Claim Chart Analysis

• For each close reference found, create a claim chart: list each element of the proposed independent claim
• For each element, note whether the reference discloses it
• If ALL elements are disclosed in a single reference: ANTICIPATION RISK — the reference anticipates
• If SOME but not all elements are disclosed: the reference is close but does not anticipate
• May be relevant to an obviousness analysis

Scenarios and Responses

• CLEAN RESULTS (no anticipating reference found): the invention appears novel
• Proceed to full patentability search and application drafting
• The claims can be drafted as broadly as the non-patent literature and patent prior art allows
• PARTIAL MATCH (closest reference discloses 4/5 elements): the missing element is the key distinguishing feature
• Draft the independent claim to include that element explicitly
• Further research what is known about that element

Anticipating Reference Found

• Review whether the reference's disclosure is actually enabling for all elements
• Consult with patent counsel on whether the claims can be amended to avoid anticipation
• If the entire inventive concept is known: the invention may not be patentable
• Consider whether improvements on the reference are patentable (dependent claim strategy)

The Duty to Disclose

• All material prior art found in the search must be disclosed in the IDS to the USPTO
• Materiality threshold: would a reasonable examiner consider this reference important?
• Anticipating references are per se material and must be disclosed

Effect on Claim Drafting

• The novelty search directly informs claim scope
• Broad claim: include only the elements not disclosed in any single reference
• Add dependent claims for features found in references (for claim differentiation evidence and fallback positions)
• Document the novelty search results and analysis for the prosecution file.