Wednesday, July 8, 2026

Patent directory · USPTO A61K / A61P

Patents matching “leflunomide”

3 pharma patents match "leflunomide" in our USPTO index (A61K/A61P) — applicant, grant date, expiration, and drug links.

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This filtered view shows 3 pharmaceutical patents matching "leflunomide" in our USPTO PatentsView index (CPC A61K/A61P). Search matches patent number, title, applicant, and CPC classification codes.

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3 results for “leflunomide” · 30,257 patents in full index Clear search

  1. US 6806373

    Process for preparing leflunomide form I

    TEVA PHARMACEUTICAL INDUSTRIES, LTD. · Granted Oct 19, 2004 · Expires Oct 14, 2024

    expired
  2. US 6723855

    Method for synthesizing leflunomide

    TEVA PHARMACEUTICAL INDUSTRIES, LTD. · Granted Apr 20, 2004 · Expires Apr 15, 2024

    expired
  3. US 6610718

    Processes for making- and a new crystalline form of- leflunomide

    TEVA PHARMACEUTICAL INDUSTRIES, LTD. · Granted Aug 26, 2003 · Expires Aug 21, 2023

    expired