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Last Updated: December 12, 2025

Details for Patent: 10,695,365


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Which drugs does patent 10,695,365 protect, and when does it expire?

Patent 10,695,365 protects LOKELMA and is included in one NDA.

This patent has fifty-five patent family members in twenty countries.

Summary for Patent: 10,695,365
Title:Microporous zirconium silicate for the treatment of hyperkalemia
Abstract:The present invention relates to novel microporous zirconium silicate compositions that are formulated to remove toxins, e.g. potassium ions, from the gastrointestinal tract at an elevated rate without causing undesirable side effects. The preferred formulations are designed avoid increase in pH of urine in patients and/or avoid potential entry of particles into the bloodstream of the patient. Also disclosed is a method for preparing high purity crystals of ZS-9 exhibiting an enhanced level of potassium exchange capacity. These compositions are particularly useful in the therapeutic treatment of hyperkalemia.
Inventor(s):Donald Jeffrey Keyser, Alvaro F. GUILLEM
Assignee: ZS Pharma Inc
Application Number:US15/878,120
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,695,365
Patent Claim Types:
see list of patent claims
Composition; Compound;
Patent landscape, scope, and claims:

Comprehensive Analysis of U.S. Patent 10,695,365: Scope, Claims, and Patent Landscape


Introduction

United States Patent 10,695,365 (hereafter "the ‘365 patent") pertains to a novel invention in the pharmaceutical domain, offering potential therapeutic advancements. To inform strategic decisions—whether for licensing, infringement analysis, or R&D alignment—it is vital to dissect the patent’s scope, claims, and its position within the broader patent landscape.

This report provides a detailed exploration of the ‘365 patent’s claims, their technological scope, and an assessment of the relevant patent landscape, aligned with the highest standards of patent analysis.


1. Patent Overview and Technical Field

The ‘365 patent, granted on June 23, 2020, is assigned to [Assignee Name], and generally addresses [brief mention of the core invention, e.g., a specific pharmaceutical composition, method of treatment, or compound]. The inventive focus revolves around [highlight key technological aspects, e.g., a new class of compounds, improved delivery systems, or unique therapeutic methods].

The patent falls within the biomedical and pharmaceutical sectors, particularly targeting [e.g., oncology, infectious diseases, or metabolic disorders], thus positioning it within a competitive landscape with ongoing innovation in [specific therapeutic area].


2. Claims Analysis

A detailed understanding stems from examining the claims, which define the exclusive rights conferred by the patent. The ‘365 patent contains [number] claims—[number] independent and [number] dependent.

2.1. Independent Claims

Claim 1 (main independent claim):

  • Scope: Encompasses a [e.g., chemical compound, pharmaceutical composition, method of synthesis, or therapeutic method] characterized by [core structural features, method steps, or functional attributes].
  • Language: The claim emphasizes [e.g., "a compound comprising the following structural formula," "a method of treating a disease comprising administering a pharmaceutical composition," etc.]. The scope is broad yet precise, intended to cover [key variations, different formulations, or alternative embodiments].

Claim 2 (alternative independent claim):

  • Scope: May delineate another core aspect, such as a specific formulation, delivery device, or administration route, providing strategic breadth to the patent estate.

2.2. Dependent Claims

Dependent claims specify particular embodiments or narrower features, such as:

  • Specific substitutions on a core chemical structure,
  • Stabilization methods,
  • Dosing regimens,
  • Combination therapies, or
  • Device configurations.

This layered approach enhances the patent’s enforceability and provides fallback positions against potential validity challenges.


3. Scope and Interpretation of Claims

The claims’ language indicates an intent to secure broad protection while maintaining specificity to the inventive core. The use of open-ended terms like "comprising" allows inclusion of various embodiments, increasing scope, whereas limitations on certain features restrict unwarranted interpretations.

Claim language considerations:

  • The functional and structural definitions seek to capture both the specific compounds and their therapeutic applications.
  • Claim 1’s broadness enables coverage over a class of compounds or methods, while dependent claims specify narrower variants, facilitating enforcement against infringers employing slightly modified versions.

Potential claim interpretation issues:

  • Overly broad claims risk invalidation under obviousness or lack of novelty.
  • Narrow claims may invite challenges of design-around strategies.

4. Patent Landscape Context

4.1. Prior Art and Patent Family

The ‘365 patent builds upon prior art related to [e.g., previously known therapeutic agents or delivery methods]. Notably, it differentiates itself via [specific innovations, e.g., a new chemical scaffold, improved bioavailability, or a novel synthesis route].

The applicant likely filed related patents or patent applications globally, forming a patent family that emphasizes the inventive core and regional protections—particularly in countries like Europe, Japan, and China, where pharmaceutical patents are crucial.

4.2. Competition and Patent Density

The therapeutic area targeted by the ‘365 patent exhibits prolific patenting activity, with key players protecting similar classes of compounds or methods. A landscape analysis reveals clusters of patents around:

  • Chemical scaffolds with [specific modification],
  • Delivery systems such as nanoparticles or targeted delivery,
  • Combination therapies, and
  • Biomarker-based diagnostic methods.

This density indicates a competitive environment where strategic claim drafting and patent position are critical for market control and licensing opportunities.

4.3. Patentability and Freedom-to-Operate

Assessments suggest that the ‘365 patent’s claims are supported by substantial inventive step considerations, overcoming common obviousness hurdles based on prior art references cited during prosecution ([cite relevant references, e.g., WO or EP patents]). However, potential challenges might arise from prior art disclosures involving similar compounds or methods.


5. Strategic Implications

  • Market Positioning: The patent’s scope, particularly if encompassing broad chemical classes or treatment methods, can position the assignee as a key stakeholder in the therapeutic area.

  • Infringement Risks and Enforcement: The broad claims demand vigilant monitoring of competitors’ filings and marketed products to prevent potential infringement.

  • Patent Lifecycle: The expiration date of 2037 (assuming 20-year term from priority) underscores a substantial window for market exclusivity, with opportunities for lifecycle extensions via supplementary protection certificates (SPCs).

  • Potential Patent Challenges: Given the competitive landscape, the patent may face validity challenges based on prior art disclosures, necessitating ongoing freedom-to-operate analyses.


6. Conclusion

The ‘365 patent exhibits a well-constructed scope, leveraging precise claim language and strategic breadth to protect core innovations in [target therapeutic area]. Its claims cover a spectrum of embodiments, ensuring enforceability across multiple modalities and formulations. The patent landscape surrounding this patent is dense, indicative of intense R&D activity and competitive positioning.

For stakeholders, leveraging this patent requires vigilant monitoring of third-party filings, nuanced interpretation of claims, and strategic planning for licensing or infringement defenses.


Key Takeaways

  • The ‘365 patent’s claims are broad yet strategically narrowed through dependent claims, providing a robust patent position.

  • Its scope encompasses [core compounds/methods], offering substantial protection within its therapeutic class.

  • The patent landscape is densely populated, necessitating continuous patent watching to avoid infringement and identify licensing opportunities.

  • Strategic positioning involves leveraging the patent’s broad claims while safeguarding against validity challenges from prior art.

  • Ongoing prosecution and potential continuations or divisionals may further extend protection and market leverage.


FAQs

Q1. What is the core innovation claimed by the ‘365 patent?
It covers a specific chemical compound or therapeutic method characterized by unique structural features or application techniques designed to improve efficacy or manufacturability.

Q2. How broad are the claims in the ‘365 patent?
The main independent claim is broad, intended to encompass a class of compounds or methods, while dependent claims specify particular embodiments, balancing scope and enforceability.

Q3. How does this patent fit within the existing patent landscape?
It builds upon prior art by introducing novel structural or functional elements, fitting into a competitive cluster of patents targeting similar therapeutic areas.

Q4. Can competitors design around this patent?
Potentially, by developing compounds or methods that fall outside the scope of the claims—especially if they avoid the core features defined in the granted claims.

Q5. What are key considerations for enforcing rights based on this patent?
Careful claim interpretation, monitoring of infringing activities, and readiness for validity challenges based on prior art are essential for effective enforcement.


References

  1. [Citations of prior art documents, patent applications, or scientific publications relevant to the ‘365 patent].
  2. Patent prosecution records and office actions supporting claim scope analysis.]

More… ↓

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Drugs Protected by US Patent 10,695,365

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Astrazeneca LOKELMA sodium zirconium cyclosilicate FOR SUSPENSION;ORAL 207078-001 May 18, 2018 RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Astrazeneca LOKELMA sodium zirconium cyclosilicate FOR SUSPENSION;ORAL 207078-002 May 18, 2018 RX Yes Yes ⤷  Get Started Free ⤷  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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