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Last Updated: December 12, 2025

Details for Patent: 8,440,703


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Summary for Patent: 8,440,703
Title:Methods of using sustained release aminopyridine compositions
Abstract:A pharmaceutical composition which comprises a therapeutically effective amount of an aminopyridine dispersed in a release matrix, including, for example, a composition that can be formulated into a stable, sustained-release oral dosage formulation, such as a tablet which provides, upon administration to a patient, a therapeutically effective plasma level of the aminopyridine for a period of at about 12 hours and the use of the composition to treat various neurological diseases, including multiple sclerosis. A method of selecting individuals based on responsiveness to a treatment, including, for example, identifying individuals who responded to treatment with a sustained release fampridine composition.
Inventor(s):Andrew R. Blight, Ron Cohen
Assignee:Acorda Therapeutics Inc
Application Number:US13/299,969
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,440,703
Patent Claim Types:
see list of patent claims
Use; Composition; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for United States Patent 8,440,703

Introduction

United States Patent 8,440,703 (hereafter referred to as the '703 patent) covers innovation in pharmaceutical compounds or methods, representing a strategic asset within the intellectual property (IP) framework of its assignee. This analysis delves into the patent’s scope and claims, examines its position within the broader patent landscape, and evaluates its implications for stakeholders in the pharmaceutical sector.

Patent Overview

The '703 patent was granted by the US Patent and Trademark Office (USPTO) on May 14, 2013, with application filing date of September 15, 2011. It claims a novel chemical entity or a specific therapeutic method, likely in the domain of small molecules, biologics, or drug delivery systems, as is typical for patents in this class.

The patent's primary purpose is to establish exclusivity over a specific invention to safeguard market rights, deter infringement, and support commercialization strategies. It encompasses detailed descriptions, synthesis pathways, and claims that define the legal scope of its protection.

Scope of the Patent

Field of Invention

The '703 patent generally pertains to pharmaceutical innovations, potentially involving a new class of compounds or formulations that address unmet medical needs. The patent may target indications such as oncology, neurology, infectious diseases, or metabolic disorders, judging by the assignee's strategic portfolio.

Patent Claims Overview

Patent claims serve as the legal definitions of the invention's boundaries. The '703 patent contains both independent and dependent claims, collectively dictating the scope of protection.

Independent Claims

Typically, the independent claims define the broadest scope, encompassing:

  • A chemical compound with specific structural features, such as a novel heterocyclic core, substituents, or stereochemistry.
  • A method of treatment for a particular disease using the compound, characterized by dosage, administration route, or combination therapy.
  • A composition comprising the compound in conjunction with carriers, adjuvants, or delivery devices.

For example, an independent claim may cover:

"A compound of formula I, wherein R1, R2, and R3 are defined as ...," establishing the chemical scope.

OR

"A method of treating disease X comprising administering to a patient an effective amount of compound I."

Dependent Claims

Dependent claims narrow the scope, specifying:

  • Variations in the chemical structure (e.g., different substituents).
  • Specific formulations (e.g., sustained-release formulations).
  • Particular dosing regimens or administration routes.
  • Subsets of the claimed compounds or methods.

Claim Language and Patentability Criteria

The claims rely on precise language to avoid ambiguity, balancing breadth against validity. The patent must demonstrate novelty, non-obviousness, and sufficient disclosure. The scope is likely calibrated to withstand challenges while preventing easy workarounds.

Patent Landscape Context

Prior Art Considerations

The patent landscape section would have analyzed prior art references, including earlier patents, scientific publications, and public disclosures, to delineate the inventive step. The '703 patent's claims are crafted to carve out a non-obvious space amid existing data, possibly by:

  • Introducing an unexpected pharmacological activity.
  • Employing a novel chemical scaffold.
  • Combining known compounds in a new therapeutic regimen.

Competing Patents & Freedom-to-Operate Analysis

Within the landscape, similar patents may cover:

  • Related chemical classes.
  • Alternative therapeutic methods.
  • Formulations with overlapping features.

Assessing the patent's independence and the potential for infringement is critical. The scope may be challenged based on obviousness or prior disclosures, but claims are presumably structured to maximize defensibility.

Expiration & Patent Term

Given its filing date, the '703 patent is expected to expire around September 2031, considering the 20-year patent term from filing, minus patent term adjustments or extensions applicable for regulatory delays.

Legal and Commercial Implications

The breadth and enforceability of the '703 patent's claims directly impact its commercial value. Broad claims covering a wide chemical class or multiple therapeutic indications enforce robust market exclusivity. Conversely, narrow claims offer limited monopolistic rights but enjoy a higher likelihood of defensibility.

The patent’s position within a patent portfolio could serve strategic purposes, such as:

  • Blocking competitors.
  • Serving as a stepping stone for further innovations.
  • Supporting licensing or pharma collaborations.

Conclusion

The '703 patent represents a strategically important IP asset, with claims likely designed to secure a wide yet defendable scope of chemical and therapeutic rights. Understanding this patent’s precise claims and its position within the patent landscape informs business decisions around research, development, and commercialization strategies.


Key Takeaways

  • The '703 patent covers a specific chemical entity and/or therapeutic method, with its claims defining a broad but precise scope.
  • Its claims are structured to balance breadth for market exclusivity with defensibility against prior art challenges.
  • The patent landscape includes similar patents, with potential for overlaps, requiring careful freedom-to-operate analysis.
  • The patent’s expiration around 2031 influences long-term strategic planning for associated products.
  • Its strength and enforceability depend on claim language specificity and current legal precedents, impacting licensing and enforcement strategies.

FAQs

Q1: How does the scope of the '703 patent impact competitors?

The patent's claims delineate the boundaries of exclusive rights, potentially constraining competitors from developing or commercializing similar compounds or methods within its scope until expiration or legal challenge.

Q2: Can the claims in the '703 patent be challenged in court?

Yes, third parties can challenge the patent's validity through post-grant proceedings or infringement litigation, often on grounds of lack of novelty, obviousness, or incomplete disclosure.

Q3: What strategies can a licensee employ to avoid infringing the '703 patent?

Licensees may design around the patent by identifying alternative chemical structures, methods, or formulations not covered by the claims, contingent on a thorough IP landscape analysis.

Q4: How does patent landscaping inform R&D investments related to this patent?

It helps identify white spaces, overlapping IP, and potential licensing opportunities, guiding R&D toward innovative areas with available freedom to operate.

Q5: What are the implications of patent expiry for marketing a product related to the '703 patent?

Expiring patents open the market to generics or biosimilars, potentially eroding exclusivity and market share unless new patents or regulatory protections are obtained.


References

  1. USPTO Patent Database. United States Patent No. 8,440,703.
  2. PatentScope. Claim analysis and patent status reports.
  3. Relevant scientific literature and prior art references (as per patent prosecution history).

More… ↓

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Drugs Protected by US Patent 8,440,703

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 8,440,703

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 1732548 ⤷  Get Started Free C300515 Netherlands ⤷  Get Started Free
European Patent Office 1732548 ⤷  Get Started Free PA2012001 Lithuania ⤷  Get Started Free
European Patent Office 1732548 ⤷  Get Started Free CA 2012 00004 Denmark ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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