Ganciclovir Patent Expiration

Ganciclovir was first introduced by Roche Palo Alto Llc in its drug Cytovene on Dec 22, 1994. Other drugs containing Ganciclovir are Zirgan, Ganzyk-Rtu, Vitrasert. 4 different companies have introduced drugs containing Ganciclovir.


Ganciclovir Patents

Given below is the list of patents protecting Ganciclovir, along with the drug name that holds that patent and the company name owning that drug.

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Drug Used in Drug Patent Number Drug Patent Title Drug Patent Expiry Drug Owner
Ganzyk-rtu US9486530 Ganciclovir compositions and related methods Sep 02, 2034 Exela Pharma



Ganciclovir's Family Patents

Family Patents

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Clinical Trials

Recent Clinical Trials on Ganciclovir:

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
Kidney Transplant Preemptive Therapy or Prophylaxis for CMV Prevention in D+R Recipients University of California, San Francisco NA RECRUITING
(Sep 1, 2026)
PHASE3
Natural History Study of the KSHV Inflammatory Cytokine Syndrome (KICS) National Cancer Institute (NCI) NA RECRUITING
(Aug 21, 2026)
PHASE2
Trial to Study Anti- HCMV Therapy in Breast Cancer Patients With Progressive Intracranial Metastases and CMV Infection The Methodist Hospital Research Institute NA RECRUITING
(Aug 1, 2026)
PHASE2
Systemic and Topical Antiviral Control of Cytomegalovirus Anterior Uveitis: Treatment Outcomes - Trials I and II University of California, San Francisco NA NOT YET RECRUITING
(Aug 1, 2026)
PHASE2
Leflunomide to Prevent Cytomegalovirus Reactivation in Stem Cell Transplant Patients Tata Memorial Centre NA RECRUITING
(Jul 1, 2026)
PHASE2
Letermovir (Prevymis) for CMV in Kidney and Pancreas Transplant Recipients University of Wisconsin, Madison NA RECRUITING
(Jun 1, 2026)
PHASE3
Randomized Controlled Trial of Valganciclovir for Cytomegalovirus Infected Hearing Impaired Infants Albert Park NA TERMINATED
(May 1, 2026)
PHASE2
Study to Evaluate Safety and Activity of TRL345 in Healthy Volunteers Trellis Bioscience LLC NA COMPLETED
(May 1, 2026)
PHASE1
CMV Immunity Monitoring in Lung Transplant Recipients NYU Langone Health NA RECRUITING
(May 1, 2026)
PHASE2
ANTIVIRAL TREATMENT OF CYTOMEGALOVIRUS IN DEPRESSION Laureate Institute for Brain Research, Inc. NA COMPLETED
(Apr 1, 2026)
PHASE1, PHASE2
Phase 1 Study of GEN2 in Patients With Advanced Solid Tumors GenVivo, Inc. NA TERMINATED
(Mar 1, 2026)
PHASE1


Ganciclovir Generic API Manufacturers

Several generic applications have been filed for Ganciclovir.

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