Prior Art Search

Uncover every reference before it uncovers you.

Hashi delivers PhD-led, AI-augmented prior art searches that surface the closest patent and non-patent references — so your drafting, prosecution, and litigation strategies rest on evidence, not assumptions.

Business problems

Where teams get stuck.

  • 01

    Keyword-only searches that miss synonymous claim language and lose novelty arguments at examination.

  • 02

    Non-patent literature — journals, standards, GitHub, product manuals — overlooked and later surfaced by opponents.

  • 03

    Foreign-language references (JP, KR, CN, DE) ignored, leaving critical prior art undiscovered.

  • 04

    Offshore vendors returning long hit-lists without technical interpretation or relevance ranking.

Our solution

Expert-led search, AI-scale retrieval, defensible evidence.

Every Hashi prior art search is scoped and executed by a domain-expert analyst — a PhD, engineer, or registered agent — supported by our AI retrieval stack. We combine semantic search, citation graphs, and classification-aware queries across patent databases, journals, standards, and grey literature to surface the closest references, ranked and interpreted for your decision.

  • PhD- and engineer-led search teams organised by technology domain.
  • AI-augmented semantic + citation retrieval across 140M+ records.
  • Non-patent literature: journals, conference proceedings, standards, product manuals, GitHub, arXiv.
  • Native-language searchers for JP, KR, CN, DE, and FR references.
  • Two-tier peer review with signed analyst attribution on every report.
  • Delivered in editable Excel, PDF, or via API into your IP management platform.

Offerings

What we deliver in this practice.

01

Knock-out Search

Fast, focused search to kill weak ideas before investing in a full application.

02

Novelty Search

Assessment of patentability against the closest prior art before drafting.

03

Patentability Search

Novelty plus inventive-step analysis with claim-scope recommendations.

04

Full Prior Art Search

Comprehensive search establishing the closest art across patent and NPL sources.

05

Invalidity Search

Litigation-grade discovery for IPRs, EPO oppositions, and defensive assertions.

06

State-of-the-Art Search

Technology-domain mapping for R&D planning and white-space identification.

07

Non-Patent Literature

Dedicated NPL sweep across journals, standards, product manuals, and code.

08

Foreign-Language Search

Native-language coverage of Japanese, Korean, Chinese, and European art.

09

Combination Search

Multi-reference obviousness analysis for §103 / inventive-step challenges.

Methodology

A defined operating model, engineered for defensibility.

01

Scope

Kickoff to align on invention, claim elements, jurisdictions, cut-off dates, and evidentiary bar.

02

Strategise

Query design across CPC/IPC codes, semantic vectors, and citation graphs.

03

Retrieve

AI-augmented sweeps across patent, NPL, standards, and product literature.

04

Analyse

Domain-expert review, claim-charting, and relevance scoring of every hit.

05

Peer review

Two-tier QC by an independent senior analyst before release.

06

Deliver

Report plus a live walkthrough with the analyst who ran the search.

Deliverables

Every engagement ships evidence, not opinions.

  • Executive summary with novelty / patentability recommendation.
  • Ranked results table with relevance scores and analyst commentary.
  • Claim charts mapping the closest references to each claim element.
  • Search strategy log: queries, databases, classification codes, cut-off dates.
  • Non-patent literature dossier with source PDFs.
  • Editable Excel, PDF, and API-ready JSON deliverables.

Benefits

Outcomes our clients rely on.

  • Defensibility

    Signed, auditable reports that stand up in prosecution and litigation.

  • Speed

    AI-augmented retrieval compresses cycle times by up to 70% versus manual search.

  • Coverage

    Semantic + classification-aware search catches references keyword search misses.

  • Global reach

    Native-language coverage of JP, KR, CN, DE, and FR references.

Industries served

Domain fluency, from silicon to small molecules.

  • Pharmaceuticals
  • Biotechnology
  • Medical Devices
  • Semiconductors
  • Electronics
  • Telecommunications
  • Software
  • AI / ML
  • Automotive
  • Chemicals
  • Energy
  • Aerospace

FAQ

Questions our clients ask most often.

When should I commission a prior art search?+

Before drafting a new application, before entering national phase, before high-cost R&D commitments, and before any licensing or litigation position. Early searches save filing spend; pre-litigation searches strengthen leverage.

How is prior art search different from a novelty or invalidity search?+

Prior art search is the broadest inquiry — surfacing all closest references. Novelty search focuses on §102 / Article 54 novelty. Invalidity search targets a specific granted claim set to build a §103 / inventive-step challenge. Hashi runs all three; the scope defines the depth.

What is your typical turnaround?+

72 hours for standard prior art and novelty searches; 5–10 business days for full invalidity and combination searches. Expedited 24-hour delivery is available for most search types.

Do you cover non-patent literature?+

Yes — always. Every Hashi prior art search includes journals, conference proceedings, standards, product manuals, GitHub, arXiv, and industry whitepapers. NPL is often decisive in invalidity and inventive-step arguments.

Which jurisdictions and databases do you cover?+

All major PTOs — US, EP, JP, CN, KR, IN, DE, GB, FR, AU, CA — plus 30+ additional jurisdictions. Databases include Derwent, PatBase, Orbit, IEEE, PubMed, STN, Espacenet, and Google Patents, supplemented by domain-specific NPL sources.

Do you sign NDAs and handle privileged work?+

Yes. Hashi routinely operates under NDA, common-interest, and attorney-client privilege. We are SOC 2 and ISO 27001 aligned with private-tenancy AI options.

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