Cephalexin Patent Expiration

Cephalexin was first introduced by Pragma Pharmaceuticals Llc in its drug Keflex on Approved Prior to Jan 1, 1982. Another drug containing Cephalexin is Keflet. 24 different companies have introduced drugs containing Cephalexin.


About Veterinary Cephalexin

Cephalexin is used in a drug marketed by 1 company: Virbac Ah Inc.

Other drugs containing Cephalexin are: Rilexine .

Cephalexin's Family Patents

Family Patents

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Clinical Trials

Recent Clinical Trials on Cephalexin:

Sometimes companies keep conducting clinical trials even after the drug's approval to discover new formulations, methods of use, or new treatment indications, so they could file for additional patents or receive regulatory exclusivity extensions, such as pediatric exclusivity, potentially delaying generic competition. Based on these recent clinical trials, generic companies need to consider the potential for new intellectual property or regulatory hurdles. These strategic moves by the drug owner might delay generic substitution or lead to additional sales of the brand drug, even after patent expiry.

Title Lead Sponsor Collaborators Status Phases
Clinical Trials
Naproxen Versus Placebo as Adjunct Treatment of Cellulitis Ottawa Hospital Research Institute NA NOT YET RECRUITING
(Jul 1, 2026)
PHASE3
Effects of Treatments on Atopic Dermatitis National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) NA RECRUITING
(Jun 5, 2026)
PHASE2
Precision Management of Urinary Tract Symptoms in Older Women Megan Bradley NA NOT YET RECRUITING
(Jun 1, 2026)
PHASE3
The Effect of Losartan on Cephalexin Aleksi Tornio NA RECRUITING
(Mar 1, 2026)
PHASE1


Cephalexin Generic API Manufacturers

Several generic applications have been filed for Cephalexin. The first generic version for Cephalexin was by Facta Farmaceutici Spa and was approved on Approved Prior to Jan 1, 1982. And the latest generic version is by Aurobindo Pharma Ltd and was approved on Jun 9, 2026.

Given below is the list of companies who have filed for Cephalexin generic, along with the locations of their manufacturing plants worldwide.