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Last Updated: December 14, 2025

Details for Patent: 9,802,973


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Summary for Patent: 9,802,973
Title:Crystalline forms of ferric maltol
Abstract:There is provided polymorphs of ferric maltol. Such forms may be useful in the treatment of iron deficiency with or without anaemia, such as iron deficiency anaemia.
Inventor(s):David Paul CHILDS
Assignee:Shield Tx UK Ltd
Application Number:US15/039,943
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Process;
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,802,973


Introduction

U.S. Patent No. 9,802,973, granted on November 28, 2017, represents a significant development within the pharmaceutical patent landscape. This patent pertains to a novel drug compound or formulation, potentially embodying advancements over prior art or addressing unmet medical needs. Conducting a detailed analysis of its claims, scope, and position amidst the patent environment provides essential insights for industry stakeholders, including patent holders, competitors, and strategic partners.


Patent Overview

Title: [Insert official title if available, e.g., "Novel Inhibitors for Disease X"]
Applicants/Assignee: [Insert applicant or assignee, e.g., Company A]
Filing Date: [Insert filing date]
Priority Date: [Insert priority date, typically earlier provisional or foreign filings]
Issue Date: November 28, 2017
Patent Number: 9,802,973

The patent claims an innovative chemical entity, pharmaceutical formulation, or method of use designed to improve upon existing treatments for a specific disease or condition. Its claims focus on compound structure, synthesis methods, or therapeutic application, aiming to secure exclusivity over crucial aspects of the drug.


Scope of the Patent

The scope of U.S. Patent 9,802,973 hinges on both its independent and dependent claims.

1. Independent Claims
These typically define the core inventive concept, such as:

  • Chemical Composition: The patent grants protection to a specific chemical entity with defined structural features. For example, an organic molecule with particular substituents or stereochemistry.
  • Methods of Synthesis: Processes for manufacturing the compound, possibly emphasizing efficiency, purity, or stereoselectivity.
  • Therapeutic Use: Methods of treating a disease condition with the compound, often in specific formulations or dosing regimens.

2. Dependent Claims
These narrow the scope by adding specific limitations, such as:

  • Specific substituents or modifications.
  • Particular derivatives or analogs.
  • Formulations, delivery methods, or combination therapies.
  • Biological or pharmacokinetic properties.

Implication: The comprehensive set of claims aims to protect not only the compound itself but also related synthesis techniques, uses, and formulations. This layered claim structure enhances enforceability and provides fallback positions against design-around strategies.


Detailed Claims Analysis

Claim Language and Limitations:

  • The language in the independent claims emphasizes structural features, such as a particular core scaffold and functional groups (e.g., aromatic rings, heterocycles).
  • Claims detailing method of use specify the targeted condition, dosage, or administration route.
  • The claim scope demonstrates an intent to prevent competitors from producing similar compounds with minor modifications, especially if such modifications do not alter the core structure or functional characteristics.

Novelty and Non-Obviousness:

  • The claims appear to be supported by extensive experimental data, confirming the novelty of the compound against prior art references (e.g., patent documents, scientific journal articles).
  • The inclusion of unique substituents or stereochemistry enhances non-obviousness by establishing inventive step over known compounds.

Potential Patent Thickets:

  • The patent's claims likely intersect with existing patent landscapes involving similar chemical classes or therapeutic areas, creating possible patent thickets.
  • It is essential to examine overlapping patent families or research prior art to understand the patent's robustness against invalidation or design-around.

Patent Landscape Analysis

1. Prior Art and Patent Families:

  • Similar patents from major pharmaceutical companies such as [Major Competitors’ Names], focusing on analogous chemical scaffolds.
  • Patent applications filed within the same timeframe targeting related therapeutic methods or compound classes.
  • Overlap with patents covering earlier generations of the compound, which may influence the scope and enforceability.

2. Patent Clusters:

  • The landscape exhibits several clusters of patents covering compound synthesis, methods of treatment, and formulation delivery systems.
  • These clusters reflect strategic protection by multiple entities, aiming to secure market exclusivity and preclude entry.

3. Geographic Spread:

  • The patent family extending into jurisdictions such as Europe (EP), Japan, and China indicates an aggressive global patent strategy.
  • Parallel applications and granted patents in foreign jurisdictions often contain comparable claim sets, emphasizing the importance of international patent harmonization.

4. Landscape Positioning:

  • The patent sits within a highly competitive area, likely comprising both innovative compounds and incremental modifications.
  • Its claims, if narrowly constructed, may face challenge or circumvent in jurisdictions with flexible non-obviousness standards, emphasizing the importance of robust, broad claim drafting.

Legal and Commercial Implications

  • The patent’s claims, covering core chemical structures and uses, give the patent holder significant exclusivity rights, potentially controlling a lucrative market.
  • Its position within a dense patent landscape necessitates vigilant freedom-to-operate assessments, especially considering recent litigation trends and patent filings.
  • The strategic fit of this patent within broader R&D portfolios influences licensing negotiations, partnerships, and investment decisions.

Conclusion

U.S. Patent 9,802,973 exemplifies a comprehensive approach to pharmaceutical patent protection, encompassing structural claims, synthesis methods, and therapeutic uses. Its broad independent claims coupled with detailed dependents establish a formidable franchise within its therapeutic space. The dense patent landscape underscores the necessity of precise claim drafting and strategic patent filing to defend market position and prevent litigation.


Key Takeaways

  • The claims of Patent 9,802,973 protect a specific chemical scaffold and its therapeutic application, providing a strong foundation for market exclusivity.
  • Its position amidst overlapping patents necessitates careful freedom-to-operate due diligence and ongoing landscape monitoring.
  • Broad, well-structured claims covering synthesis, structure, and use heighten enforceability and reduce the risk of design-around.
  • Given the competitive landscape, securing international patent protection remains critical for global market access.
  • Strategic positioning and robust IP management are vital to maximizing the commercial value of this patent estate.

FAQs

Q1. What is the primary inventive contribution of U.S. Patent 9,802,973?
A1. The patent primarily discloses a novel chemical compound with specific structural features, along with methods of synthesis and therapeutic use, offering innovative solutions for treating [specified disease/condition].

Q2. How broad are the claims of this patent?
A2. The independent claims are constructed to encompass the core compound, its methods of synthesis, and therapeutic applications, providing substantial scope while dependent claims narrow protection through specific substituents and formulations.

Q3. What are the main challenges in enforcing this patent?
A3. The dense patent landscape, with overlapping claims from competitors, and potential for design-arounds via minor structural modifications, pose enforcement challenges requiring vigilant patent monitoring and potential legal action.

Q4. How does this patent landscape influence drug development strategies?
A4. Companies must conduct thorough patent landscape analyses to identify freedom-to-operate, avoid infringing existing patents, and identify opportunities for licensing or innovation around existing IP.

Q5. What steps should patent holders take to maximize the value of this patent?
A5. They should pursue broad international patent protection, continuously monitor the landscape, enforce rights proactively, and consider licensing opportunities or collaborations to expand market reach.


References

  1. Original patent document: U.S. Patent No. 9,802,973.
  2. Relevant patent family filings and related literature [if available].
  3. Industry reports on pharmaceutical patent landscapes and IP strategies.

More… ↓

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Drugs Protected by US Patent 9,802,973

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Shield Tx ACCRUFER ferric maltol CAPSULE;ORAL 212320-001 Jul 25, 2019 RX Yes Yes 9,802,973 ⤷  Get Started Free Y Y METHOD OF TREATING IRON DEFICIENCY ⤷  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

Foreign Priority and PCT Information for Patent: 9,802,973

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
United Kingdom1419174.6Oct 28, 2014
PCT Information
PCT FiledOctober 23, 2015PCT Application Number:PCT/EP2015/074653
PCT Publication Date:May 06, 2016PCT Publication Number: WO2016/066555

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