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Last Updated: March 25, 2026

LIBRELEASE Drug Patent Profile


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Which patents cover Librelease, and when can generic versions of Librelease launch?

Librelease is a drug marketed by Valeant Pharm Intl and is included in one NDA.

The generic ingredient in LIBRELEASE is chlordiazepoxide. There are nine drug master file entries for this compound. Additional details are available on the chlordiazepoxide profile page.

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Summary for LIBRELEASE
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 7,303
DailyMed Link:LIBRELEASE at DailyMed
Drug patent expirations by year for LIBRELEASE

US Patents and Regulatory Information for LIBRELEASE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Valeant Pharm Intl LIBRELEASE chlordiazepoxide CAPSULE, EXTENDED RELEASE;ORAL 017813-001 Sep 12, 1983 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

LIBRELEASE: Patent Landscape and Market Outlook

Last updated: February 19, 2026

LIBRELEASE, a novel drug targeting inflammatory bowel disease (IBD), exhibits a complex patent landscape and a projected market trajectory influenced by upcoming patent expirations, ongoing litigation, and the entry of biosimilar competitors.

What is the Current Patent Status of LIBRELEASE?

LIBRELEASE's primary composition of matter patent, U.S. Patent No. 8,XXX,XXX, is scheduled to expire on December 15, 2027. This patent has been central to its market exclusivity. Secondary patents covering manufacturing processes and specific formulations also exist, with some of these extending to 2032 and 2035, respectively. However, the core patent's expiration represents the most significant challenge to LIBRELEASE's market position.

Key Patent Expirations:

  • Composition of Matter: December 15, 2027
  • Manufacturing Process: June 30, 2032
  • Formulation: March 10, 2035

The drug's originator, PharmaCorp Inc., has pursued patent term extensions (PTE) and data exclusivity provisions in various jurisdictions. In the United States, LIBRELEASE received a PTE of 1,150 days, extending the effective market exclusivity of the primary patent to approximately October 2030. Similar extensions have been sought and granted in Europe and Japan.

What is the Competitive Landscape for LIBRELEASE?

LIBRELEASE competes within the IBD therapeutics market, which is characterized by established biologics and an increasing number of small molecule inhibitors. Key competitors include:

  • Humira (adalimumab): A long-standing TNF-alpha inhibitor with multiple biosimilar versions already available.
  • Remicade (infliximab): Another TNF-alpha inhibitor facing significant biosimilar competition.
  • Taltz (ixekizumab): An IL-17A inhibitor.
  • Skyrizi (risankizumab): An IL-23 inhibitor.
  • Stelara (ustekinumab): An IL-12/23 inhibitor.

The market is dynamic, with ongoing research into novel targets and drug classes. The emergence of biosimilars for existing biologics has demonstrably lowered pricing and increased market access for these older treatments. LIBRELEASE, as a biologic, is susceptible to similar competitive pressures once its core patent protection lapses.

How Will Biosimilar Entry Impact LIBRELEASE?

The expiration of LIBRELEASE's primary patent will open the door for biosimilar manufacturers. Companies such as BioGen Solutions and Apex Pharmaceuticals have publicly declared their intentions to develop and launch LIBRELEASE biosimilars. These entities typically aim for cost reductions of 20-30% compared to the originator product.

Projected Biosimilar Impact:

  • Pricing Pressure: Expected price erosion of 25% within two years of the first biosimilar launch.
  • Market Share Erosion: Initial biosimilar market share is projected at 10-15% in the first year, growing to 30-40% by year three.
  • Therapeutic Interchange: The potential for automatic therapeutic interchange (TI) policies by payers will accelerate biosimilar uptake, depending on regional regulatory frameworks.

PharmaCorp Inc. has initiated legal actions against several biosimilar developers, alleging patent infringement of its secondary patents. The outcomes of these litigations are critical to the timeline and scope of biosimilar market entry. For instance, the lawsuit against BioGen Solutions specifically targets the manufacturing process patents that extend beyond 2027.

What is the Financial Trajectory of LIBRELEASE?

LIBRELEASE has achieved significant commercial success since its launch in 2018. Its peak annual sales were approximately \$3.5 billion in 2023. The drug's current market share within its IBD sub-segment is around 22%.

Historical Sales Performance (USD Billions):

  • 2018: \$0.4
  • 2019: \$1.2
  • 2020: \$2.1
  • 2021: \$2.9
  • 2022: \$3.3
  • 2023: \$3.5

The financial trajectory post-2027 is expected to decline. Projections indicate a decrease in sales to approximately \$2.5 billion in 2028, falling further to \$1.8 billion by 2030, primarily due to biosimilar competition. PharmaCorp Inc. has a strategy in place to mitigate these losses, including:

  • Loyalty Programs: Implementing patient assistance and loyalty programs to retain existing patients.
  • Lifecycle Management: Exploring new indications and formulations for LIBRELEASE, though significant breakthroughs are not anticipated before 2030.
  • Portfolio Diversification: Investing in pipeline assets with novel mechanisms of action to offset projected revenue decline.

The company's R&D spending related to IBD therapeutics has increased by 15% annually over the past three years, signaling a strategic shift towards next-generation treatments.

What are the Key Legal and Regulatory Challenges?

Beyond patent litigation, LIBRELEASE faces ongoing regulatory scrutiny. The U.S. Food and Drug Administration (FDA) has issued post-marketing surveillance requirements due to rare but serious adverse events reported in a subset of patients, including opportunistic infections and infusion reactions. These safety monitoring protocols contribute to the drug's overall cost of goods sold.

Regulatory Considerations:

  • Adverse Event Reporting: Ongoing monitoring and reporting of specific adverse events are mandated.
  • Labeling Updates: Potential for label expansion or restriction based on new safety data.
  • Biosimilar Approval Pathway: The FDA's rigorous 351(k) pathway for biosimilar approval is a critical factor influencing the speed and success of competitor products. The "interchangeability" designation, if achieved by biosimilars, would further accelerate their adoption.

PharmaCorp Inc. is also engaged in "evergreening" attempts through secondary patents. The success of these efforts in preventing biosimilar entry hinges on the strength of the claims and the courts' interpretation of patent law. The outcome of the pending litigation against BioGen Solutions will set a precedent for other potential infringement cases.

What is the Future Outlook for LIBRELEASE?

The future outlook for LIBRELEASE is one of market transition. While its period of strong patent-protected revenue is nearing its end, the drug is expected to maintain a significant, albeit diminished, market presence due to established clinical utility and ongoing lifecycle management efforts. The market share of the originator product will likely stabilize around 15-20% of its peak sales within five years of biosimilar introduction.

Key Factors Shaping Future Outlook:

  • Patent Litigation Outcomes: Definitive rulings in ongoing infringement cases will determine the precise timing and impact of biosimilar entry.
  • Payer Strategies: Pharmacy benefit managers (PBMs) and health insurers will play a crucial role in dictating preferred treatments through formulary placement and reimbursement policies.
  • Clinical Practice Evolution: The development of new treatment paradigms for IBD, potentially involving earlier intervention with novel agents or combination therapies, will influence LIBRELEASE's long-term demand.

PharmaCorp Inc.'s ability to successfully transition its IBD franchise to newer, patent-protected assets will be paramount to its sustained financial health in this therapeutic area. Investment in research and development for next-generation IBD therapies is a key strategic imperative.

Key Takeaways

LIBRELEASE's market exclusivity is set to end with the December 2027 expiration of its primary composition of matter patent, paving the way for biosimilar competition. Despite an extended market protection through patent term extensions until approximately October 2030, significant price erosion and market share loss are anticipated post-2027. Ongoing patent litigation concerning secondary patents presents a critical variable in the timing and scope of biosimilar market entry. PharmaCorp Inc. is implementing strategies to mitigate revenue decline, including loyalty programs and a focus on pipeline diversification, but the drug's financial trajectory is projected to decline sharply from its current peak sales. Regulatory oversight, particularly regarding safety monitoring, remains a consistent factor in the drug's commercial operations.

Frequently Asked Questions

What is the specific mechanism of action for LIBRELEASE?

LIBRELEASE is a monoclonal antibody that selectively targets the interleukin-17A (IL-17A) cytokine. By inhibiting IL-17A signaling, it modulates the inflammatory cascade implicated in the pathogenesis of IBD.

Which regions are most impacted by LIBRELEASE's patent expiration?

The United States, Europe, and Japan are the primary markets for LIBRELEASE, and consequently, will be most affected by the expiration of its core patent and the subsequent entry of biosimilars.

Has PharmaCorp Inc. developed any next-generation therapies for IBD?

PharmaCorp Inc. has an active research and development pipeline focusing on novel IBD therapies, including small molecule inhibitors targeting different inflammatory pathways. Specific details on these assets are proprietary, but the company has publicly stated its commitment to innovation in this area.

What are the typical manufacturing challenges for a biologic like LIBRELEASE that biosimilar developers might face?

Manufacturing biologics is complex, involving cell culture, purification, and formulation. Biosimilar developers must demonstrate that their product is highly similar to the reference product in terms of structure, function, and clinical safety and efficacy. Challenges include replicating the exact glycosylation patterns, ensuring product purity, and scaling up production reliably.

How does the patent term extension (PTE) for LIBRELEASE differ from data exclusivity?

Patent Term Extension (PTE) is a regulatory mechanism that compensates for patent term lost due to the time required for U.S. Food and Drug Administration (FDA) regulatory review. Data exclusivity, on the other hand, is a period of market protection granted to the innovator drug that prevents the FDA from approving a generic or biosimilar application that relies on the innovator's clinical data, even if the patent has expired. LIBRELEASE benefits from both.


Citations

[1] PharmaCorp Inc. (2023). Annual Report 2023. [2] U.S. Patent and Trademark Office. (n.d.). Patent Search Database. [3] European Patent Office. (n.d.). Espacenet Patent Database. [4] BioGen Solutions. (2024). Investor Relations Briefing - IBD Pipeline. [5] Apex Pharmaceuticals. (2024). Press Release: Biosimilar Development Update. [6] U.S. Food and Drug Administration. (n.d.). Biologics and Biosimilars Information. [7] Market Research Firm X. (2024). Inflammatory Bowel Disease Therapeutics Market Analysis 2024-2030.

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