Wednesday, June 10, 2026

Patent intelligence · CA

CA 2421303

NOUVEAUX COMPOSES

expired
Status expired
Years to expiry 0
Applicant portfolio 25
Patent details — CA 2421303

Quick answer

CA 2421303 (NOUVEAUX COMPOSES) is held by SMITHKLINE BEECHAM CORP [US]. Status: expired. Granted Mar 21, 2002. Expires Mar 16, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims

More from SMITHKLINE BEECHAM CORP [US]

Related pharmaceutical patents in our USPTO index.

  1. SA 92120308

    تركيبة للاستخدام الموضعي topical composition

    BEECHAM GROUP PLC [GB] · Expires Jun 10, 2025

    expired
  2. AT E269330

    CHEMISCHE VERBINDUNGEN

    BEECHAM GROUP PLC [GB] · Expires Jul 10, 2024

    expired
  3. EP 1425277

    HARNSTOFF-DERIVATE ALS VANILLOID-REZEPTOR-ANTAGONISTEN FÜR DIE SCHMERZBEHANDLUNG

    SMITHKLINE BEECHAM PLC [GB] · Expires Jun 4, 2024

    expired
  4. SA 91110341

    مستحضر موضعي لعلاج العدوى بفيروس الحلا (القوباء) Herpesvirus

    BEECHAM GROUP PLC [GB] · Expires May 20, 2024

    expired
  5. HU P0302480

    PYRIDINONE DERIVATIVES FOR TREATMENT OF ATHEROSCLEROSIS, PROCESS FOR PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME

    SMITHKLINE BEECHAM PLC [GB] · Expires Dec 24, 2023

    expired
  6. AT E245157

    3,9-DIAZABICYCLO-(3.3.1)-NONANYLDERIVATE, VERFAHREN UND INTERMEDIATE FÜR IHRE DARSTELLUNG UND SIE ENTHALTENDE PHARMAZEUTISCHE ZUSAMMENSETZUNGEN

    BEECHAM GROUP PLC [GB] · Expires Aug 10, 2023

    expired
  7. HK 1004528

    Dentifrice compositions

    BEECHAM GROUP PLC [GB] · Expires Jul 5, 2023

    expired
  8. HU P0204410

    PYRIMIDINE-4-ONE DERIVATIVES, PROCESS FOR THEIR PREPARATION, PHARMACEUTICAL COMPOSITIONS CONTAINING THEM AND THEIR USE

    SMITHKLINE BEECHAM PLC [GB] · Expires May 23, 2023

    expired

Frequently asked questions

What is US patent 2421303?

CA 2421303 (NOUVEAUX COMPOSES) is held by SMITHKLINE BEECHAM CORP [US]. Status: expired. Granted Mar 21, 2002. Expires Mar 16, 2022 (0 years remaining) — relevant for patent-cliff and LOE planning.

Who owns CA 2421303?

SMITHKLINE BEECHAM CORP [US] is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 25 pharmaceutical patents for this assignee.

When does CA 2421303 expire?

Our index shows an expiration date of Mar 16, 2022 (0 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.