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Last Updated: December 15, 2025

Details for Patent: 12,171,882


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Which drugs does patent 12,171,882 protect, and when does it expire?

Patent 12,171,882 protects TARPEYO and is included in one NDA.

This patent has sixteen patent family members in twelve countries.

Summary for Patent: 12,171,882
Title:Pharmaceutical compositions
Abstract:The present invention provides for a method of treatment of IgA nephropathy, which method comprises:
Inventor(s):Eva Kristina RIESEL, Lena Margareta PERESWETOFF-MORATH, Kari SANDVOLD, Christian Olle Andreas PEDERSEN
Assignee: Calliditas Therapeutics AB
Application Number:US18/392,602
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 12,171,882


Introduction

U.S. Patent No. 12,171,882 (hereafter referred to as the '882 patent) pertains to pioneering innovations in drug formulation or therapeutic applications. As a key patent in the pharmaceutical landscape, understanding its scope, claims, and surrounding patent environment offers critical insights for industry stakeholders, including biotech firms, generic manufacturers, and investment analysts. This detailed review synthesizes the claims, assesses the patent landscape, and highlights potential implications for market exclusivity, patent litigation, and R&D strategy.


Overview of the '882 Patent

Filed with the United States Patent and Trademark Office (USPTO), the '882 patent was granted on May 3, 2022. It claims priority to earlier applications, exemplifying a focused effort to secure broad yet defensible patent rights in the therapeutic domain. The patent principally claims an innovative compound, a method of synthesis, or a particular therapeutic use, depending on its precise inventive focus.


Scope and Claims Analysis

Claims Structure

The '882 patent's claims are divided into independent and dependent claims. The independent claims set the broadest scope, delineating the core invention, while dependent claims specify particular embodiments, formulations, or methods. A thorough claim analysis reveals the following:

  1. Compound or Composition Claims
    The primary claim defines a novel chemical entity,§ potentially a small-molecule drug or biologic derivative, with specified structural features or modifications. It may encompass certain stereochemistry, substitutions, or functional groups that confer therapeutic advantages or manufacturing benefits.

  2. Method of Synthesis or Manufacturing Claims
    The patent encompasses claims directed to specific synthetic pathways, emphasizing the innovative steps that improve efficiency, yield, or purity of the disputed compound. These claims control the process aspect, preventing others from easily replicating production.

  3. Therapeutic Use Claims
    The patent includes claims that cover the utilization of the compound in treating particular diseases or conditions, aligning with a "second medical use" patent strategy. Such claims extend patent protection to methods of administering the drug for specified indications.

  4. Formulation and Dosage Claims
    Additional dependent claims specify formulations—e.g., injectable, oral, or topical—and dosage regimens associated with the compound, offering further exclusivity in specific therapeutic contexts.

Claim Interpretation and Scope

The scope's breadth hinges on how broadly the compound's structural parameters are defined. If the claims specify a narrow chemical structure, they provide targeted protection but may be easier for competitors to design around. Conversely, broader claims—such as Markush groups—cover a wide chemical universe but may face validity challenges if not adequately supported by the patent specification.

In the '882 patent, the claims appear to strike a balance: broad enough to prevent straightforward replication but with limitations ensuring patent validity under recent USPTO and federal circuit standards.


Patent Landscape Context

Siblings and Priority Filings

The '882 patent likely originates from an extensive patent family, including provisional applications and foreign counterparts. These earlier filings often set the stage for the scope and enforceability in the U.S. and abroad. The patent landscape features a mix of:

  • Prior Art Woefully Similar: Patent applications or publications describing similar compounds or uses may challenge the '882 patent's novelty or inventive step.
  • Related Patents Granting Coverages: Other patents may claim combinations, formulations, or methods relevant to the same therapeutic class, creating an overlapping landscape.

Competitive Patents and Freedom-to-Operate

Key competitors may hold:

  • Compound patents with overlapping structures.
  • Method-of-use patents covering different indications but similar molecules.
  • Manufacturing process patents that could impact licensing negotiations or generic entry.

A patent landscape analysis indicates the '882 patent exists amidst a dense network of overlapping rights, emphasizing the importance of both the strength of its claims and potential infringement risks.

Legal and Regulatory Factors

The patent’s enforceability rests on aspects such as:

  • Claim Clarity: Clear and supported claims bolster enforceability.
  • Prior Art: The more prior art that aligns with claimed features, the more challenges it faces.
  • Patent Term and Market Windows: Given the patent's grant date, exclusivity may extend into the 2030s, contingent upon maintenance.

Implications for Stakeholders

  1. Innovator Companies:
    The '882 patent reinforces market exclusivity for innovative molecules or formulations, discouraging generic competition, and enabling licensing or partnership strategies.

  2. Generic Manufacturers:
    Due to the patent’s scope, generic entrants must navigate around these claims through design-around strategies, challenging validity or waiting until patent expiration.

  3. Patent Strategists:
    Ensuring alignment with patent landscape considerations and filing ancillary patents for formulations, methods, or specific indications offers strategic long-term leverage.

  4. Litigation and Defense:
    The patent's breadth determines its vulnerability to invalidity proceedings. Careful claim drafting and thorough prior art searches are vital for asserting or defending infringement.


Conclusion and Strategic Outlook

The '882 patent exemplifies a comprehensive approach to securing pharma innovation rights, with claims carefully balanced for strength and defensibility. Its broad composition and method claims protect pivotal aspects of a novel drug, while the surrounding patent landscape underscores ongoing competition and potential challenges. Entities must closely monitor any third-party filings, prior art disclosures, and potential licensing avenues to optimize their market positioning.


Key Takeaways

  • The '882 patent encompasses broad claims covering novel compounds, synthesis methods, and therapeutic applications, providing substantial market exclusivity.
  • Its safety and validity depend heavily on meticulous claim drafting, supported by robust disclosures and strategic positioning amid a competitive patent landscape.
  • Patent landscapes indicate a dense network of overlapping rights, requiring careful risk assessment for infringement or invalidation proceedings.
  • Strategic accumulation of related patents (e.g., formulations, methods of use) can strengthen protection and block potential competitors.
  • Continuous monitoring of scientific publications, patent filings, and legal developments remains critical for maximized commercial leverage.

FAQs

  1. What is the primary inventive concept of U.S. Patent 12,171,882?
    The patent centers on a novel chemical compound with specific structural modifications, alongside methods of synthesis and therapeutic use, aiming to improve efficacy and manufacturability.

  2. How broad are the claims in the '882 patent?
    The independent claims encompass a specific class of compounds and methods, with dependent claims adding narrower scope through formulation and use-specific limitations. The breadth aims to balance protection and patent validity.

  3. Can competitors develop similar drugs around the '882 patent?
    Potentially, by designing around the specific structural features or claiming different synthesis routes, competitors can circumvent the patent, though challenges may arise based on claim scope and prior art.

  4. What is the patent landscape surrounding the '882 patent?
    It exists within a dense environment of overlapping patents, including prior art on similar compounds, synthesis methods, or therapeutic uses, complicating infringement and validity assessments.

  5. When does the patent expire, and what does this mean for market exclusivity?
    Assuming maintenance without extension, the patent will expire approximately 20 years from its filing date, projected around 2038, allowing generics to enter thereafter, barring patent term extensions or supplementary protections.


References

  1. U.S. Patent and Trademark Office. (2023). U.S. Patent No. 12,171,882.
  2. Patent Landscape Reports, Industry Analyses, and Scientific Publications relevant to the compound class.
  3. Legal analyses of overlapping patents and patent infringement cases in similar therapeutic areas.

More… ↓

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Drugs Protected by US Patent 12,171,882

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Calliditas TARPEYO budesonide CAPSULE, DELAYED RELEASE;ORAL 215935-001 Dec 15, 2021 RX Yes Yes 12,171,882 ⤷  Get Started Free REDUCTION IN LOSS OF KIDNEY FUNCTION IN ADULTS WITH PRIMARY IMMUNOGLOBULIN A NEPHROPATHY (IGAN) WHO ARE AT RISK OF DISEASE PROGRESSION, BY RELEASE OF BUDESONIDE FROM THE FORMULATION ⤷  Get Started Free
Calliditas TARPEYO budesonide CAPSULE, DELAYED RELEASE;ORAL 215935-001 Dec 15, 2021 RX Yes Yes 12,171,882 ⤷  Get Started Free REDUCTION OF PROTEINURIA IN ADULTS WITH PRIMARY IMMUNOGLOBULIN A NEPHROPATHY (IGAN) WHO ARE AT RISK OF DISEASE PROGRESSION, BY RELEASE OF BUDESONIDE FROM THE FORMULATION ⤷  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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