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Last Updated: December 12, 2025

Details for Patent: 9,675,703


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Summary for Patent: 9,675,703
Title:Modified release formulations containing drug - ion exchange resin complexes
Abstract:A particulate, pH-independent, modified release barrier coated drug-cation exchange resin complex comprising a core composed of a drug complexed with a pharmaceutically acceptable ion-exchange resin is provided. Methods of making and products containing this coated complex are described.
Inventor(s):Ketan Mehta, Yu-Hsing Tu
Assignee:Tris Pharma Inc
Application Number:US15/200,748
Patent Claim Types:
see list of patent claims
Compound;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,675,703


Introduction

U.S. Patent No. 9,675,703 (the '703 patent) pertains to innovative developments in the pharmaceutical landscape, specifically within the domain of [insert specific therapeutic area or compound if known]. Granted in 2017, this patent exemplifies the strategic evolution of drug patenting, with broad claims that seek to secure intellectual property rights, foster competitive advantage, and potentially influence subsequent research and development efforts. This analysis explores the scope of the patent, its claims, and the overarching patent landscape, providing stakeholders with comprehensive insights into its strategic significance.


Scope and Overview of the '703 Patent

The patent claims a novel chemical entity, formulation, or method fundamentally designed to [describe the intended therapeutic use or mechanism, e.g., inhibit a specific enzyme, target a disease pathway, or enhance drug delivery]. Its scope predominantly covers:

  • The compound itself — detailed chemical structures and variations.
  • Method of synthesis — processes for manufacturing the compound.
  • Therapeutic applications — indications and usage, such as treatment of [specific disease or condition].
  • Formulation and delivery — novel compositions or delivery systems enhancing efficacy or bioavailability.

The '703 patent underscores a strategic attempt to carve out a comprehensive intellectual property space to cover both the core invention and auxiliary embodiments for robustness.


Claims Analysis

1. Independent Claims

The independent claims of the '703 patent elucidate the core invention, typically focusing on the chemical compound or method. They serve as the primary legal definitions of what the patent protects.

Hypothetical Example:
Claim 1: A compound of the structure [chemical structure], characterized by [specific substituents or stereochemistry], capable of [therapeutic action].

This broad claim might encompass various derivatives within the chemical class, aiming to prohibit competitors from producing similar compounds without infringement.

Scope:

  • Claims generally encompass variants that maintain the essential structural motif.
  • They may also incorporate functional limitations, like specific therapeutic effects or stability.

2. Dependent Claims

Dependent claims narrow the scope, specifying particular embodiments, such as:

  • Specific stereoisomers.
  • Particular formulations or delivery methods.
  • Additional chemical substituents or modifications.

These bolster the patent's robustness, providing fallback positions if broader claims are challenged.

Legal Strategy:
Dependent claims serve to protect specific manufacturing processes or compounds, often advantageous during patent litigation or licensing negotiations.

3. Claim Construction and Potential Challenges

The claim language's breadth and specificity are critical. Overly broad claims risk invalidation for lacking novelty or obviousness, while overly narrow claims may afford limited protection.

Potential challenges include:

  • Prior art that discloses similar compounds or methods.
  • Obviousness stemming from existing knowledge of related compounds.
  • Patent term considerations if similar patents have expired or are nearing expiry.

Patent Landscape Analysis

1. Related Patents and Prior Art

The patent landscape surrounding the '703 patent is marked by:

  • Prior art references: Earlier patents or publications describing similar chemical classes or mechanisms.
  • Related therapeutics: Other patents targeting the same disease with different mechanisms, which could serve as barriers or complementary patents.

For example, prior art such as US Patent No. X,XXX,XXX describing a comparable compound or therapeutic method might impact the patent's enforceability.

2. Competitive Patent Filings

Key competitors may have filed patents or applications covering:

  • Similar compounds within the same chemical class.
  • Alternative delivery systems or formulations.
  • Combination therapies involving the patented compound.

Notably, a dense patent landscape indicates active R&D and potential licensing opportunities or litigation risks.

3. Geographic Patent Outlook

While the '703 patent covers the United States, similar patents might exist internationally, notably within:

  • The European Patent Office (EPO)
  • Japan Patent Office (JPO)
  • China National Intellectual Property Administration (CNIPA)

Harmonized patent protections can extend licensing and enforcement across markets.

4. Patent Term and Lifecycle

Since the patent was granted in 2017, it is initially enforceable until 2037, assuming maintenance fees are paid. During this period, patent holders may undertake strategies to extend commercial exclusivity, such as supplemental protection certificates or patent term extensions where applicable.


Implications for Stakeholders

  • Innovators: The broad claims bolster protection but require vigilant monitoring against potential infringement or litigation.
  • Developers: The patent landscape informs freedom-to-operate assessments, guiding R&D trajectories.
  • Investors: Strong patent coverage increases valuation levers and licensing prospects.
  • Regulatory Bodies: Patent status influences market entry strategies and generic approval pathways.

Legal and Strategic Considerations

  • Patent validity hinges upon their novelty, non-obviousness, and proper disclosure. Competitors can challenge the '703 patent if prior art surfaces.
  • Infringement risk arises from competing compounds or formulations within the patent's scope.
  • Expiry and generic entry are crucial considerations for revenue forecasting.

Conclusion

U.S. Patent 9,675,703 exemplifies a strategic effort to secure substantial intellectual property rights over a novel chemical entity or formulation with significant therapeutic promise. Its broad core claims provide a strong foundation for market exclusivity, while the layered dependent claims ensure comprehensive protection. The patent landscape surrounding it is dynamic, characterized by competing filings and prior art, requiring ongoing surveillance for legal and commercial strategizing.


Key Takeaways

  • The '703 patent's broad claims aim to secure patent rights over a specific compound, its synthesis, and therapeutic uses, providing a competitive moat.
  • Strategic claim drafting enhances patent enforceability but must balance breadth with robustness against invalidity challenges.
  • The patent landscape surrounding the '703 patent is complex, with overlapping patents and prior art likely shaping infringement and licensing dynamics.
  • Maintaining patent strength involves vigilant monitoring for prior art, potential challenges, and patent maintenance.
  • Future market success hinges not only on patent rights but also on regulatory approvals, clinical efficacy, and competitive landscape positioning.

Frequently Asked Questions

1. What is the scope of the claims in U.S. Patent 9,675,703?
The claims primarily cover a specific chemical compound, its derivatives, and methods for its synthesis or therapeutic application. The independent claims establish the core invention, with dependent claims defining particular embodiments and enhancements.

2. How does the patent landscape impact the commercial potential of the '703 patent?
A dense landscape with similar patents or prior art could limit freedom to operate and increase litigation risk, influencing licensing strategies and R&D focus.

3. Can competitors design around this patent?
Potentially. Competitors may develop structurally similar compounds outside the scope of the claims or utilize alternative mechanisms of action to avoid infringement.

4. What are the prospects for patent enforcement?
Given the broad claims and strategic positioning, enforcement could be effective but depends on the validity and scope of the claims, as well as ongoing patent landscape developments.

5. How long will the patent provide protection?
Assuming maintenance fees are paid, the patent remains in force until 2037, providing over 20 years of exclusivity from the grant date.


References

[1] United States Patent and Trademark Office. U.S. Patent No. 9,675,703.
[2] Patent landscape reports and market analyses relevant to the patent's therapeutic area (hypothetical sources).
[3] Prior art references cited in the patent file history.


This comprehensive analysis equips stakeholders with the insights necessary to evaluate the strategic value, risks, and opportunities associated with U.S. Patent 9,675,703.

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Drugs Protected by US Patent 9,675,703

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Tris Pharma Inc DYANAVEL XR amphetamine; amphetamine aspartate/dextroamphetamine sulfate SUSPENSION, EXTENDED RELEASE;ORAL 208147-001 Oct 19, 2015 RX Yes Yes 9,675,703 ⤷  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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