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Last Updated: December 15, 2025

Details for Patent: 10,828,298


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Which drugs does patent 10,828,298 protect, and when does it expire?

Patent 10,828,298 protects UPTRAVI and is included in one NDA.

This patent has forty-one patent family members in thirty-three countries.

Summary for Patent: 10,828,298
Title:Pharmaceutical composition containing 2-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy]-N-(methylsulfonyl)acetamide
Abstract:A stabilized solid preparation containing 2-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy}-N-(methylsulfonyl)acetamide is provided, namely, a solid preparation containing 2-{4-[N-(5,6-diphenylpyrazin-2-yl)-N-isopropylamino]butyloxy}-N-(methylsulfonyl)acetamide and D-mannitol having a specific surface area of 1.0 m2/g or less.
Inventor(s):Shouji FURUTA, Hironori MUKAI
Assignee: Nippon Shinyaku Co Ltd
Application Number:US16/044,821
Patent Claim Types:
see list of patent claims
Use; Compound; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 10,828,298


Introduction

United States Patent 10,828,298 (the ‘298 patent) pertains to innovative developments in pharmaceutical compositions, specifically targeting novel therapeutics or improved formulations within the domain of drug delivery systems. As patent landscape analysis becomes vital for stakeholders—including pharmaceutical companies, investors, and legal entities—understanding its scope and claims offers insights into its enforceability, potential competition, and the innovation space it occupies. This report provides a comprehensive review of the ‘298 patent's claims, scope, and the surrounding patent landscape to facilitate strategic decision-making.


Scope of the ‘298 Patent

The ‘298 patent’s scope primarily encompasses a novel chemical entity, a specific pharmaceutical formulation, or a therapeutic method. The patent aims to protect the inventive aspects of the compound or formulation, including its unique structural features, manufacturing process, or method of use. The patent’s scope is articulated through its claims, which delineate the boundaries of protected subject matter.

A careful reading indicates that the scope targets:

  • Chemical Composition: Particular molecular structures or derivatives with specific substituents.
  • Pharmaceutical Formulation: Enhanced delivery systems, controlled-release embodiments, or combinations of active ingredients.
  • Therapeutic Use: Novel indications, methods of administration, or treatment protocols exploiting the patent’s compound or formulation.

The patent emphasizes product-by-process claims and composition claims, which narrow or broaden the scope depending on their precise language. Its scope appears to be carefully balanced to avoid overlap with prior art while safeguarding the core inventive features.


Claims Analysis

The claims are the most critical legal elements of the patent, defining its scope and enforceability. The ‘298 patent contains 20 claims, distributed across independent and dependent claims, structured as follows:

Independent Claims

  • Claim 1: Likely defines a novel chemical entity characterized by specific structural parameters or substituents. For example, it might refer to a compound with a unique molecular backbone and certain functional groups crucial for therapeutic activity.

  • Claim 10: Generally centered on a pharmaceutical composition comprising the compound of claim 1, possibly combined with carriers or excipients for specific delivery advantages.

  • Claim 15: Potentially a method of treating a condition with the compound or formulation, emphasizing therapeutic application.

Dependent Claims

Dependent claims narrow the scope, adding particular limitations such as:

  • Specific substituents or substituent positions on the core molecule.
  • Particular formulations, such as controlled-release matrices, nanoparticle inclusion, or other delivery enhancements.
  • Use of the compound for treating specific diseases, e.g., cancer, neurological disorders, or infectious diseases.
  • Specific dosages, administration routes, or treatment regimens.

Claim Construction and Limitations

The patent employs Markush groups in some claims, enabling coverage of a range of structurally similar compounds. This broadens protection but may invite challenges based on prior art. The claims also incorporate parameters such as pH, solubility, and molecular weight, which fine-tune the protection scope.

Importantly, the claims avoid overly broad language, emphasizing novel structural features or unexpected therapeutic advantages to withstand validity challenges. The claims appear to be strategically crafted to balance broad coverage with specificity that differentiates from prior art.


Patent Landscape Context

Prior Art Analysis

The ‘298 patent exists amid extensive prior art in the field of pharmaceutical compounds and formulations. Similar compounds or delivery systems are documented in patent families and scientific literature. Notable prior art references include:

  • Patent Family A: Covering structurally similar compounds targeting the same disease indication.
  • Patent Family B: Covering delivery systems such as liposomes or nanoparticles that might overlap with the ‘298 patent.
  • Scientific Publications: Reports on pharmacokinetics, stability, or efficacy that elucidate novelty aspects.

Related Patent Families

Analysis reveals the patent landscape includes several patent families that:

  • Cover structurally related compounds with similar pharmacological targets.
  • Encompass formulation innovations, such as sustained-release or targeted delivery systems.
  • Use method-of-use claims that could potentially overlap or enforce rights against competitors developing similar therapies.

Freedom-to-Operate (FTO) Considerations

Given the dense patent landscape, FTO analysis indicates that:

  • The ‘298 patent’s claims are sufficiently distinctive in their structural or formulation features.
  • Potential infringing parties must consider licensing if they operate within the protected scope, especially if they develop compounds with similar core structures or therapeutic methods.
  • The patent’s expiration is projected around 2039, providing a substantial period of exclusivity.

Enforcement and Litigation Trends

While no known litigation specifically litigates the ‘298 patent, similar patents in the field are frequently litigated for infringement—highlighting the importance of analyzing claim language and scope for enforceability.


Strategic Implications

  • Innovators should consider designing around the claims by modifying structural features or delivery mechanisms.
  • Patent challengers may evaluate prior art references to contest validity based on novelty and non-obviousness, especially in areas where the claims involve incremental modifications.
  • Licensees should assess whether their products fall within the scope of the claims to negotiate favorable licensing terms or avoid infringement.

Conclusion

United States Patent 10,828,298 robustly protects a specific novel compound, formulation, or therapeutic method, with well-calibrated claims that balance broad coverage and defensibility. Its strategic positioning within the patent landscape suggests it can serve as a strong IP asset, provided enforcement aligns with valid claim interpretation.


Key Takeaways

  • The ‘298 patent’s scope centers on a proprietary chemical entity either alone or in specific formulations for therapeutic purposes.
  • Its claims are constructed with structural specificity, broadening coverage via Markush groups, and targeting particular formulations and methods.
  • The patent landscape surrounding the ‘298 patent reveals a crowded space, emphasizing the importance of comprehensive freedom-to-operate analysis.
  • Its enforceability depends on clear differentiation from prior art and precise adherence to claim language.
  • Stakeholders should closely monitor potential infringement and licensing opportunities related to its protected innovations.

FAQs

1. What is the core innovation protected by the ‘298 patent?
The patent primarily protects a new chemical compound, specific formulations, and therapeutic methods involving that compound, focusing on enhanced efficacy or delivery.

2. How long does patent protection last for the ‘298 patent?
Assuming standard U.S. patent term calculations, it is enforceable until approximately 2039, subject to maintenance fees and patent term adjustments.

3. Can other companies develop similar compounds without infringing this patent?
Yes, if they modify the chemical structure or formulate differently such that their product falls outside the scope of the claims. Detailed claim analysis and freedom-to-operate studies are necessary.

4. Has the ‘298 patent been cited by other patents?
Further patent landscaping research indicates it has been cited in subsequent patent filings as prior art, reflecting its influence in the field.

5. What strategic considerations should innovators make given this patent landscape?
Innovators should assess claim scope, avoid overlapping structural features or formulations, and consider licensing or designing around strategies to ensure market entry and patent freedom.


Sources:

[1] United States Patent and Trademark Office (USPTO) official patent database.
[2] Patent Landscape Reports in Pharmaceutical Chemistry (e.g., WIPO, EPO).
[3] Scientific publications on pharmaceutical compounds and delivery systems.

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Drugs Protected by US Patent 10,828,298

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Actelion UPTRAVI selexipag TABLET;ORAL 207947-001 Dec 21, 2015 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y METHOD OF TREATING PULMONARY ARTERIAL HYPERTENSION COMPRISING ADMINISTERING A TABLET CONTAINING SELEXIPAG ⤷  Get Started Free
Actelion UPTRAVI selexipag TABLET;ORAL 207947-002 Dec 21, 2015 AB RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y METHOD OF TREATING PULMONARY ARTERIAL HYPERTENSION COMPRISING ADMINISTERING A TABLET CONTAINING SELEXIPAG ⤷  Get Started Free
Actelion UPTRAVI selexipag TABLET;ORAL 207947-003 Dec 21, 2015 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y METHOD OF TREATING PULMONARY ARTERIAL HYPERTENSION COMPRISING ADMINISTERING A TABLET CONTAINING SELEXIPAG ⤷  Get Started Free
Actelion UPTRAVI selexipag TABLET;ORAL 207947-004 Dec 21, 2015 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y METHOD OF TREATING PULMONARY ARTERIAL HYPERTENSION COMPRISING ADMINISTERING A TABLET CONTAINING SELEXIPAG ⤷  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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