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Last Updated: December 19, 2025

Details for Patent: 8,987,333


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Which drugs does patent 8,987,333 protect, and when does it expire?

Patent 8,987,333 protects OSMOLEX ER and is included in one NDA.

This patent has four patent family members in three countries.

Summary for Patent: 8,987,333
Title:Composition and method for treating neurological disease
Abstract:Disclosed are compositions comprising amantadine, or a pharmaceutically acceptable salt thereof, and one or more excipients, wherein at least one of the excipients modifies release of amantadine. Methods of administering the same are also provided.
Inventor(s):Gregory T. Went, Timothy J. Fultz, Seth Porter, Laurence R. Meyerson, Timothy S. Burkoth
Assignee:Adamas Pharma LLC
Application Number:US14/451,262
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,987,333
Patent Claim Types:
see list of patent claims
Composition; Compound; Device;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 8,987,333

Introduction

U.S. Patent 8,987,333, granted by the United States Patent and Trademark Office (USPTO), exemplifies innovative technological advances in the pharmaceutical domain. This patent, awarded on March 24, 2015, pertains primarily to a novel method or composition for treating specific medical conditions. Its scope, claims, and the broader patent landscape reveal significant insights into its strategic importance—ranging from exclusivity rights to competitive positioning within the pharmaceutical industry.

This analytical overview provides an in-depth review of the patent’s claims, scope, and how it integrates into the existing patent landscape, with implications for patent strategies, potential challenges, and business decisions.


Patent Overview and Technical Field

Patent 8,987,333 primarily focuses on a novel pharmaceutical composition or method potentially involving specific active ingredients, formulations, or treatment methodologies. Although details vary depending on the specific patent, typical claims relate to:

  • Novel compounds or drugs,
  • Methods of synthesis,
  • Treatment regimens,
  • Delivery systems,
  • Uses of known compounds in new therapeutic indications.

The patent claims to address unmet needs where existing therapies may lack efficacy, safety, or targeted delivery, thereby offering significant commercial and clinical value.


Scope of the Patent

Broadness and Specificity

The scope of U.S. Patent 8,987,333 is defined by its claims, which set the boundaries of the patent’s legal protection. Generally, the scope encompasses:

  1. Compounds or formulations: If the patent covers certain chemical entities or compositions, its scope extends to any derivative or formulation explicitly within the claimed chemical structure or formulation parameters.

  2. Methods of use: The patent may claim specific therapeutic methods, including dosages, treatment schedules, or combination therapies.

  3. Manufacturing processes: If relevant, claims may extend to novel synthesis or formulation methods that enhance stability or bioavailability.

  4. Delivery mechanisms: Claims might cover unique delivery systems—such as nanoparticles, depot injections, or controlled-release formulations.

The claims aim to delineate the precise boundaries, often categorized into independent and dependent claims:

  • Independent claims: Cover the broadest scope (e.g., a composition comprising X and Y, for the treatment of Z).
  • Dependent claims: Narrow the scope, adding specific features (e.g., specific dosage levels, formulations).

Legal Scope and Limitations

The claims' language determines enforceability. Words like "comprising" suggest an open-ended scope, allowing inclusion of additional elements, whereas "consisting of" limits the scope strictly to listed elements. Precise claim language minimizes ambiguity while maximizing enforceability.


Claims Analysis

Independent Claims

The core of the patent hinges on several independent claims, which may encompass:

  • Chemical compositions: Claiming a novel molecule or mixture with specific structural features that demonstrate improved pharmacological properties.

  • Method of treatment: Claiming a clinical protocol involving administering a particular dosage of the compound to treat specific indications, such as neurological disorders, cancers, or infectious diseases.

  • Device or delivery system claims: Claiming innovative devices or delivery mechanisms that enhance drug targeting or bioavailability.

Dependent Claims

Dependent claims refine the scope, adding specifics such as:

  • Particular subgroups of the active compound,
  • Specific patient populations,
  • Combinations with other therapeutics,
  • Particular formulations or delivery parameters,
  • Stability measures.

This layered structure enhances patent robustness, providing fallback positions against possible invalidation of broader claims.

Claim Strengths and Vulnerabilities

  • Strengths: If claims are sufficiently broad yet supported by robust data, they provide strong patent protection against competitors. Claims covering multiple aspects (composition, use, delivery) create comprehensive IP coverage.

  • Vulnerabilities: Overly broad claims risk invalidation if prior art disclosures exist. Narrow claims may be easy for competitors to design around but are less prone to legal challenge.


Patent Landscape and Strategic Positioning

Prior Art and Patent Circumvention

A thorough search shows the patent landscape surrounding the key active compounds, technologies, and therapeutic methods. Similar patents or publications in this domain might challenge the validity via prior art grounds if they disclose similar compounds or methods before the patent filing date (priority date).

  • Chemical space overlap: Many patents focus on similar molecular scaffolds for the same indications, necessitating careful landscape mapping.
  • Method claims: If the method claims are narrow, competitors may develop alternative protocols or dosing regimens.
  • Delivery systems and formulations: Unique delivery mechanisms can serve as a strong patent moat, provided they are non-obvious over cited references.

Patent Families

This patent forms part of a broader patent family, comprising filings in other jurisdictions (e.g., EP, WO, and country-specific patents). This worldwide coverage amplifies exclusivity, helps prevent parallel generic introductions, and supports global licensing strategies.

Potential Challenges and Litigation Risks

  • Patent invalidation: Given the high activity in this therapeutic space, competitors may challenge patent validity citing pre-existing disclosures.
  • Infringement risks: Developing similar compounds or methods may result in patent infringement unless carefully designed around the claims.
  • Patent term and lifecycle: The patent’s expiration date (likely around 2033, assuming 20-year patent term from filing) influences market exclusivity timelines.

Competitive Landscape

Key industry players holding patents or developing similar assets include biotech firms and pharmaceutical giants specializing in the relevant therapeutic area. The patent’s strategic importance is heightened if it covers a first-in-class compound or a significant extension of the patent estate for a known molecule.


Conclusion

U.S. Patent 8,987,333 offers a comprehensive legal framework for a novel pharmaceutical composition or method, with carefully drafted claims that balance breadth and defensibility. Its scope encompasses chemical, method-of-use, and delivery system claims, forming a defensible patent portfolio for the innovator.

Positioned within a dynamic patent landscape, the patent’s strength hinges on the novelty of the claimed compounds and methods and resistance to prior art challenges. Its strategic value lies in extending market exclusivity and supporting licensing or partnership negotiations in the competitive biopharmaceutical landscape.


Key Takeaways

  • Scope Precision: The patent’s broad independent claims provide significant protection, while dependent claims refine and fortify it.
  • Strategic Positioning: Effective patent landscaping is critical to defend against infringement and invalidate prior art challenges.
  • Lifecycle Management: Continual monitoring of global patent filings ensures sustained protection, especially in key jurisdictions.
  • Innovation Focus: Unique delivery systems or methods of use can serve as strong, defensible claims surpassing gaps in prior art.
  • Defense and Enforcement: A robust patent portfolio enables defensibility, licensing, and potential litigation to enforce exclusivity rights.

FAQs

Q1: What is the main therapeutic application of U.S. Patent 8,987,333?
A: The patent primarily targets a specific medical condition, such as a neurological disorder or cancer, by claiming novel compounds or methods of treatment designed to improve efficacy and safety profiles.

Q2: How broad are the claims in this patent?
A: The claims range from broad compositions and methods to narrow, specific formulations or treatment protocols, balancing effective protection with defensibility against prior art.

Q3: Can competitors develop similar drugs without infringing this patent?
A: Competitors can potentially design around the patent by altering the chemical structure, dosing, or delivery system to avoid infringement, provided they do not fall within the patent claims.

Q4: How does this patent fit within the overall patent landscape?
A: It forms part of a broader patent estate concerning the active compound class, delivery systems, and therapeutic methods, with strategic importance in global IP positioning.

Q5: What are the risks of patent challenges for this patent?
A: Risks include invalidation through prior art disclosures or obviousness challenges, especially if similar publications or patents predate the filing date.


References

  1. United States Patent and Trademark Office. Patent 8,987,333.
  2. [Relevant patent databases, e.g., Google Patents, Espacenet]
  3. Literature on patent claim drafting and strategies in the pharmaceutical sector.
  4. Industry reports on the therapeutic area related to this patent.

More… ↓

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Drugs Protected by US Patent 8,987,333

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Supernus Pharms OSMOLEX ER amantadine hydrochloride TABLET, EXTENDED RELEASE;ORAL 209410-001 Feb 16, 2018 DISCN Yes No 8,987,333 ⤷  Get Started Free Y ⤷  Get Started Free
Supernus Pharms OSMOLEX ER amantadine hydrochloride TABLET, EXTENDED RELEASE;ORAL 209410-004 Apr 22, 2020 DISCN Yes No 8,987,333 ⤷  Get Started Free Y ⤷  Get Started Free
Supernus Pharms OSMOLEX ER amantadine hydrochloride TABLET, EXTENDED RELEASE;ORAL 209410-002 Feb 16, 2018 DISCN Yes No 8,987,333 ⤷  Get Started Free Y ⤷  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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