Friday, July 10, 2026

Patent directory · USPTO A61K / A61P

Patents matching “antagonist”

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

Matches 678
Index total 30,257
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This filtered view shows 678 pharmaceutical patents matching "antagonist" in our USPTO PatentsView index (CPC A61K/A61P). Search matches patent number, title, applicant, and CPC classification codes.

Patent results

678 results for “antagonist” · 30,257 patents in full index Clear search

  1. US 6100252

    Heterocyclic compounds and their use as angiotensin antagonists

    Takeda Chemical Industries Ltd. · Granted Aug 8, 2000 · Expires Aug 3, 2020

    expired
  2. US 6080871

    Sulfonamides and sulfamides as H.sub.3 receptor antagonists

    The James Black Foundation Limited · Granted Jun 27, 2000 · Expires Jun 22, 2020

    expired
  3. US 6066642

    Dihydropyridine-, pyridine-, benzopyran-4-one- and triazoloquinazoline derivative, their preparation and their use as adenosine receptor antagonists

    The United States of America, as represented by the Department of Health and Human Services · Granted May 23, 2000 · Expires May 18, 2020

    expired
  4. US 6043212

    Recombinant C140 receptor, its agonists and antagonists, and nucleic acids encoding the receptor

    COR Therapeutics, Inc. · Granted Mar 28, 2000 · Expires Mar 23, 2020

    expired
  5. DE 69131398

    VERWENDUNG VON 5-HT4 REZEPTORANTAGONISTEN ZUR BEHANDLUNG VON VORHOF-FIBRILLATION UND ZUR VORBEUGUNG VON SCHLAGANFALL

    SMITH KLINE FRENCH LAB [GB] · Granted Mar 2, 2000 · Expires Feb 26, 2020

    expired
  6. US 6015789

    Combined use of GnRH agonist and antagonist

    Takeda Chemical Industries Ltd. · Granted Jan 18, 2000 · Expires Jan 13, 2020

    expired