Structure → patents → literature

Search patents by drawing a molecule

Draw a structure, or type a name, CAS number or SMILES. MolPatent finds the compound, every patent it turns up in and the papers that cite it — including analogs, intermediates and generically disclosed (Markush) structures. Sign up with your email and get 1,000 free credits — each search or download uses 10, with no time limit.

Draw a structure
Try a known molecule:ImatinibSitagliptinAspirin
Patent-style line drawing of a chemical structure
FIG. 1 — A structure like this is the query. Draw one and MolPatent returns the compound, its patent families and the papers that cite it.

How it works

Three steps, one list you can hand over

  1. 1

    Give the structure

    Draw it in the editor, or paste a name, CAS number, SMILES or InChI. Every search type works from either input.

  2. 2

    We search the public records

    Exact, substructure and similarity matching against PubChem compounds, then a wider scan of related compounds so patents on analogs, intermediates and generic examples are collected too.

  3. 3

    Read, filter, export

    Patents open as PCT families with titles, abstracts, assignees and priority dates. Filter and sort, then export to CSV, PDF or Word.

What you get

Built for an IP desk, not a shopping cart

Exact match

Same atoms, bonds, stereochemistry and isotopes — the quick novelty check before a full search.

Substructure

Everything that contains your drawn fragment, up to 200 compounds per run.

Similarity

Close analogs ranked by 2D Tanimoto, with the threshold you set (70–99%).

Markush-aware scan

Patents from related compounds are merged automatically: analogs, intermediates and smaller examples of generic formulas (R = alkyl, cycloalkyl, heterocycle).

PCT family view

WO families lead the list; click a PCT number to open the whole family with titles and dates.

Filters & export

Filter by number and priority date, sort ascending or descending, export CSV in full, PDF or Word at 100 results per file with a range picker.

Data & limits

Public records only — and it says so on every page

Where the data comes from

PubChem compound, patent and literature records, and PubMed abstracts. Nothing is scraped from paid databases, and no account or key is needed.

What it cannot tell you

Titles, dates and families are for orienting you, not legal status — confirm in Espacenet, WIPO, USPTO or the Indian Patent Office registers. Patents that mention a molecule only by name, with no deposited structure, are outside a structure search; the Google Patents and Espacenet links on each row are the fastest free way to those.