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The most comprehensive Indian patent database available — over one million patents with full text extracted from original PDFs and every specification classified into structured sections. No other search tool gives you this level of access to IP India content.
1M+
Patents indexed
4
Patent offices (Delhi, Mumbai, Chennai, Kolkata)
90K+
Annual filings (2023)
20yr
Patent term from filing
Every patent in this database has been individually processed: PDFs were fetched from the IP India portal, raw text extracted, and each specification parsed into structured sections — title, abstract, claims, field of invention, background, summary, detailed description, and drawings.
This makes PatentAssist.ai the only search engine where you can search across the full body of Indian patent text at section-level granularity. IP India's own portal does not offer full-text search. No other tool indexes this content.
IN202541000123
Application type codes (T digit)
1 Ordinary 2 Ordinary – Div. 3 Ordinary – Add. 4 Convention 5 Convention – Div. 6 Convention – Add. 7 PCT Nat. Phase 8 PCT – Div. 9 PCT – Add. Pre-2016 format
1234/DEL/2010
— serial number / office code (DEL · MUM · KOL · CHE)
/ filing year. Legacy numbers still appear in older patents
in this database.
Understanding the stages helps you interpret search results and application statuses correctly.
Provisional or complete application filed at one of the four IPO offices. Priority date established.
Application published in the Official Journal 18 months from filing/priority date.
Form 18 (standard) or Form 18A (expedited) filed within 48 months of priority date.
First Examination Report issued. Applicant responds to objections within 12 months.
Patent granted or refused. Granted patents published in the Official Journal.
Enable the AI toggle to find semantically related patents even when exact terminology differs. Indian patent abstracts sometimes use non-standard vocabulary — AI search bridges this gap by matching on technical meaning rather than keywords.
Before filing, upload your provisional specification or technical disclosure as a PDF. Our AI extracts the inventive concepts and finds the most relevant Indian prior art automatically — ideal for a quick patentability check.
IP India classifies patents using the IPC system. Use the Field of Invention filter to narrow results to a specific technology domain — useful for landscape analysis and identifying active players in your technical area.
When conducting FTO analysis, filter to only "Granted" applications to find in-force patents. Abandoned or lapsed patents cannot be enforced, though they still constitute prior art for novelty assessment.
Human Necessities
Pharma, Food, Agriculture
Operations & Transport
Manufacturing, Vehicles
Chemistry & Metallurgy
Polymers, Materials, Biotech
Textiles & Paper
Fibres, Weaving, Papermaking
Fixed Constructions
Civil Engineering, Buildings
Mechanical Engineering
Engines, Pumps, HVAC
Physics
Instruments, Optics, Computing
Electricity
Circuits, Communications, Power
Indian patent search, IP India database, and patent prosecution in India.
Enter the application number directly in the search box.
Post-2016 numbers use the format IN·YYYY·J·T·NNNNNN — e.g. IN202541000123 (2025, Chennai, Ordinary, serial 000123). Pre-2016 numbers
appear as 1234/DEL/2010. You can also search by title, abstract, or applicant
name and filter by filing date.
Form 18 is the Request for Examination — without it, the Indian Patent Office will not examine your application. It must be filed within 48 months of the priority date. Form 18A is for expedited examination (higher fee). Failure to file within the deadline results in the application being treated as withdrawn.
After filing Form 18, the FER is typically issued in 12–24 months (standard) or 6–12 months (expedited, Form 18A). Total prosecution time from filing to grant has historically averaged 4–6 years, but has improved with recent IPO modernisation drives. Expedited examination reduces this significantly for qualifying applicants.
A provisional specification secures a priority date early but does not contain claims. The complete specification (with claims) must follow within 12 months. Patents are only examined and granted on the complete specification. Filing provisionally first is a common strategy to establish priority while finalising the invention.
Section 3 of the Patents Act, 1970 excludes: abstract theories, natural discoveries, mathematical methods, mental acts, business methods, computer programs per se, literary/artistic works, traditional knowledge, and new forms of known substances without enhanced efficacy. Software is patentable only if it produces a technical effect beyond normal physical computer interactions.
Yes. Foreign individuals and companies can file Indian patents directly or through the PCT (Patent Cooperation Treaty) national phase. Foreign applicants must appoint an Indian patent agent registered with the IPO. India is a member of the Paris Convention, so foreign filers can claim priority from earlier national/regional filings within 12 months.
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