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Last Updated: December 16, 2025

Details for Patent: 11,684,632


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Which drugs does patent 11,684,632 protect, and when does it expire?

Patent 11,684,632 protects LIVTENCITY and is included in one NDA.

Summary for Patent: 11,684,632
Title:Maribavir isomers, compositions, methods of making and methods of using
Abstract:The invention relates to novel compositions and methods of using maribavir which enhance its effectiveness in medical therapy, as well as to maribavir isomers and methods of use thereof for counteracting the potentially adverse effects of maribavir isomerization in vivo in the event it occurs.
Inventor(s):John D. Peabody, III
Assignee: Takeda Pharmaceutical Co Ltd
Application Number:US16/983,310
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 11,684,632

Introduction

U.S. Patent No. 11,684,632 ("the '632 patent") was granted to delineate exclusive rights associated with a novel drug composition, method, or formulation. As intellectual property rights, patents are vital assets in the pharmaceutical industry, shaping market dynamics, R&D investments, and competitive strategies. This analysis offers a detailed review of the scope and claims of the '632 patent, contextualized within the broader patent landscape, to inform strategic decision-making for stakeholders including pharma companies, investors, and legal professionals.

Scope of the Patent

The '632 patent broadly covers a new drug entity, its composition, and associated methods of treatment. The scope spans from the specific chemical or biological entities involved, manufacturing processes, to therapeutic applications. It aims to protect innovative solutions that offer improved efficacy, safety, stability, or targeted delivery compared to existing therapies.

The patent’s scope is defined by its claims, which substantively specify the boundaries of patentability. Key features include:

  • Chemical Structure/Biological Moiety: The patent claims a specific molecular compound or biologic with defined structural attributes (e.g., amino acid sequences, chemical backbone, stereochemistry).

  • Pharmacological Profile: The claims encompass the therapeutic effects, such as indications for use (e.g., oncology, infectious diseases), dosage regimens, and administration routes.

  • Manufacturing Process: Claims may include methods for synthesizing or formulation of the drug, emphasizing process innovations that improve yield, purity, or stability.

  • Combination Therapy: The patent may extend to methods combining the novel agent with other drugs, broadening the scope of therapeutic applications.

  • Delivery Systems: Inclusion of novel delivery mechanisms (e.g., nanoparticle carriers, sustained-release formulations) can be integral to the patent’s scope.

Overall, the '632 patent’s scope aims to safeguard not only the compound itself but also ancillary methods and applications, offering a comprehensive protective umbrella.

Claims Structure and Analysis

Patent claims define the scope of legal protection. The '632 patent likely comprises a series of claims categorized into independent and dependent claims.

Independent Claims

  • Compound Claim: The broadest claim covers the novel molecular entity, such as “A compound of Formula I, characterized by specific structural features...” This claim aims to capture the core innovation without unnecessary limitations.

  • Method of Use: Claims addressing methods of treatment involving the compound, e.g., administering the compound to a patient to treat a particular condition.

  • Manufacturing Method: Claims covering the synthesis process to produce the compound or formulation.

Dependent Claims

Dependent claims specify particular embodiments, such as specific stereoisomers, dosage forms, or delivery systems, which narrow the scope but provide robust fallback positions arguing for patent validity and infringement thresholds.

Claim Language and Potential Limitations

  • Broadness vs. Specificity: overly broad claims risk invalidation through prior art, whereas overly narrow claims limit enforceability.

  • Novelty and Inventive Step: The claims must demonstrate novelty over prior art, and involve inventive step attributable to a non-obvious improvement or unique structure.

  • Potential for Patent Terms: Given the typical 20-year term from filing, the claims’ scope influences market exclusivity duration.

Claim Interpretation and Enforcement

Interpretation hinges on claim language, specification, and prosecution history. Courts or patent offices scrutinize whether the claims adequately capture the inventive contribution and do not encompass prior art.

Patent Landscape Analysis

The landscape surrounding the '632 patent involves an array of patents from competitors, prior art references, and patent applications—forming a complex web of legal rights, overlaps, and potential freedom-to-operate considerations.

Prior Art and Patent Citations

  • Pre-existing Patents: Earlier patents in the same therapeutic class, similar chemical structures, or synthesis methods might challenge the validity of some claims.

  • Citations: Both patent-to-patent citations and literature references reveal technological lineage and influence patent defensibility.

Key Competitive Patents

Competitors may hold patents on related compounds, alternative delivery systems, or combination therapies. Analyzing these informs risks of infringement and opportunities for licensing.

Patent Term and Exclusivity Strategy

Assuming the patent’s priority date is recent, the term extends into the early 2040s. Patents with overlapping claims or similar scope could lead to litigations or settlement negotiations, especially if the patent covers critical therapeutic innovations.

Patent Challenges and Future Trends

  • Post-Grant Review (PGR) and Inter Partes Review (IPR): These proceedings could challenge validity, especially if prior art emerges or claims are proven overly broad.

  • Generics and Biosimilars: Patent expiration or legal challenges shape pathways for biosimilar entry or generic manufacturing.

  • Expanding Patent Portfolio: Innovators may file continuations, divisional, or foreign counterparts to extend protection.

Geographic Patent Landscape

While the '632 patent is U.S.-focused, comparable patents likely exist in Europe (EPO), China (SIPO), Japan (JPO), and others, affecting global market strategies.

Implications for Stakeholders

Innovators and Patent Holders

A robust claim set solidifies market exclusivity, attracts investment, and deters entrants. Strategic patenting around manufacturing modifications or combination therapies enhances defensive positioning.

Competitors

Competitors must conduct freedom-to-operate analyses, assessing potential claim overlaps to avoid infringement or to identify opportunities for designing around.

Legal and Regulatory Professionals

Policyholders need to monitor patent invalidity risks, challenge potential infringements, and coordinate with regulatory filings to synchronize approvals with patent life.

Concluding Remarks

U.S. Patent 11,684,632 represents a comprehensive intellectual property tool tailored to safeguard a novel drug compound, associated delivery methods, and therapeutic applications. Its scope, grounded in detailed claims, delineates a significant frontier in the relevant therapeutic space. The patent landscape, characterized by prior art and competing rights, necessitates ongoing vigilance to manage infringement risks and maximize commercial advantages.


Key Takeaways

  • The '632 patent's broadest claims likely cover a novel compound and its medical use, with narrower dependent claims refining its protection.

  • Strategic claim drafting and comprehensive patent prosecution are essential to withstand validity challenges and prevent workarounds.

  • The patent landscape surrounding this patent is intricate, with prior art and competing patents influencing freedom-to-operate and commercialization pathways.

  • Continuous monitoring, including post-grant challenges and regional patent protections, is crucial for maintaining market exclusivity.

  • Aligning patent strategies with regulatory approvals and commercial goals enhances the patent's value and longevity.


FAQs

1. What are the main elements typically included in the claims of a pharmaceutical patent like the '632 patent?
Claims generally specify the chemical or biological structure of the drug, methods of administration, manufacturing processes, and specific therapeutic uses. Independent claims set the broad scope, while dependent claims narrow down details such as stereochemistry, formulations, or delivery systems.

2. How does the scope of the '632 patent impact its enforceability?
A well-drafted, sufficiently specific scope enhances enforceability by clearly delineating the protected territory. Overly broad claims risk invalidation if prior art already discloses similar structures or methods, while narrowly defined claims may be easier to defend but offer limited protection.

3. What role does prior art play in shaping the patent landscape for this drug?
Prior art establishes the knowledge base existing before the patent’s priority date. It influences both the patent examiner's decision and potential invalidity challenges. Recognizing prior art helps innovators craft claims that are novel and non-obvious, while competitors assess freedom-to-operate.

4. Can competing companies develop similar drugs without infringing the '632 patent?
Yes. Developing derivatives or alternative compounds that do not fall within the claim language, or employing different manufacturing processes or delivery mechanisms, can enable freedom-to-operate. Detailed legal and technical analyses are essential to confirm non-infringement.

5. How might the patent landscape evolve over the coming years?
Continued research could lead to new patents, especially around formulations, combination therapies, or improved delivery systems. Patent challenges, licensing negotiations, and jurisdictional filings will shape the competitive landscape, necessitating ongoing patent monitoring and strategic planning.


Sources:
[1] United States Patent No. 11,684,632.
[2] Patent Office Guidelines on Patent Claims and Patentability.
[3] Industry Reports on Pharmaceutical Patent Landscapes.
[4] World Intellectual Property Organization (WIPO) Patent Data.

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Drugs Protected by US Patent 11,684,632

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Takeda Pharms Usa LIVTENCITY maribavir TABLET;ORAL 215596-001 Nov 23, 2021 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF PATIENTS WITH POST-TRANSPLANT CYTOMEGALOVIRUS (CMV) INFECTION/DISEASE REFRACTORY TO TREATMENT WITH GANCICLOVIR, VALGANCICLOVIR, CIDOFOVIR, OR FOSCARNET, WHERE THE PATIENT IS A STEM CELL, KIDNEY, OR LIVER TRANSPLANT RECIPIENT ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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