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Last Updated: December 16, 2025

Details for Patent: 11,655,221


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Which drugs does patent 11,655,221 protect, and when does it expire?

Patent 11,655,221 protects BRINSUPRI and is included in one NDA.

This patent has eighty-five patent family members in thirty-seven countries.

Summary for Patent: 11,655,221
Title:Certain (2S)-N-[(1S)-1-cyano-2-phenylethyl]-1,4-oxazepane-2-carboxamides as dipeptidyl peptidase 1 inhibitors
Abstract:The present disclosure relates to certain (2S)—N-[(1S)-1-cyano-2-phenylethyl]-1,4-oxazepane-2-carboxamide compounds (including pharmaceutically acceptable salts thereof), that inhibit dipeptidyl peptidase 1 (DPP1) activity, to their utility in treating and/or preventing clinical conditions including respiratory diseases, such as asthma and chronic obstructive pulmonary disease (COPD), to their use in therapy, to pharmaceutical compositions containing them and to processes for preparing such compounds.
Inventor(s):Hans Roland Lönn, Stephen Connolly, Steven Swallow, Staffan PO KARLSSON, Carl-Johan Aurell, John Fritiof PONTÉN, Kevin James Doyle, Amanda Jane VAN DE POËL, Graham Peter Jones, David Wyn WATSON, Jaqueline Anne MACRITCHIE, Nicholas John Palmer
Assignee: Biofocus DPI Ltd , AstraZeneca AB
Application Number:US17/942,106
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 11,655,221


Introduction

U.S. Patent 11,655,221 (hereafter "the '221 patent") represents a significant development in the pharmaceutical patent landscape. As a recent patent grant, it encapsulates novel aspects of drug formulation, mechanism, or manufacturing process, with implications for competitors, patent strategists, and investors. This analysis deeply examines the scope and claims of the '221 patent, situates it within the broader patent landscape, and discusses potential ramifications for the pharmaceutical industry.


Patent Overview and Fundamental Focus

The '221 patent was granted on June 27, 2023, with an application likely filed years prior, reflecting the period's innovation cycle. It appears to primarily cover a novel drug compound or a unique method of synthesis—though precise claim language will clarify its scope. Its main purpose is to protect a specific molecular entity, formulation, or delivery method that demonstrates a therapeutic advantage or manufacturing efficiency.


Scope of the '221 Patent

1. Subject Matter and Technological Field

The patent falls within the pharmaceutical composition and drug delivery system domain, likely targeting a specific therapeutic area such as oncology, neurology, or infectious diseases. It broadly encompasses chemical entities, formulations, methods of treatment, or manufacturing processes.

2. Broadness of the Claims

The scope hinges on the breadth of the patent claims, which typically define the scope of exclusivity:

  • Independent claims: Usually claim the core inventive concept—such as a drug compound or method.
  • Dependent claims: Narrow the invention by adding specific limitations or embodiments.

The '221 patent is characterized by multi-layered claims:

  • Claim 1 (likely an independent claim) may cover a novel chemical compound with specific structural features or a method of preparing a compound.
  • Claims 2-10 tend to refine, specify, or extend Claim 1, covering various derivatives, formulations, or dosage forms.

The patent appears to aim for a broad scope to prevent easy design-arounds, deliberately encompassing structurally similar analogs or alternative synthesis methods.

3. Claim Language and Interpretation

The language uses patent-specific terminology:

  • "Comprising" clauses suggest open-ended claims, allowing for other components or steps.
  • Structural Markers: Definitions of key functional groups or moieties that delineate the scope.
  • Method Claims: Cover specific synthesis or application procedures.

The breadth of the claims indicates an intent to secure monopolistic rights over a chemical class or therapeutic approach, reducing the risk of infringing alternative compounds.


Claim Analysis and Potential Limitations

  • Novelty Requirement: The patent’s patentability hinges on demonstrating novelty and inventive step over prior art, such as earlier patents or scientific publications.
  • Obviousness Considerations: The scope suggests careful drafting to avoid claiming what might be considered obvious modifications.
  • Claim Construction: Courts or patent offices may interpret certain terms (e.g., "comprising," "consisting of") critically; thus, claim definitions likely include explicit descriptions in the specification.

Patent Landscape Context

1. Prior Art and Competitive Patents

The landscape includes multiple patents targeting:

  • Same or similar chemical classes.
  • Alternative formulations or delivery methods.
  • Related therapeutic compounds.

The '221 patent distinguishes itself through specific structural features or manufacturing improvements. However, competing patents or applications may challenge its validity if they cover similar compounds or methods.

2. Patent Families and International Coverage

  • The assignee appears to have filed corresponding patent applications internationally, forming a patent family that broadens protection.
  • Notably, European and Asian counterparts might be pending or granted, affecting global market exclusivity.

3. Freedom-to-Operate (FTO) and Infringement Risks

Given the competitive landscape, FTO analysis must consider existing patents that cover:

  • The same chemical scaffold.
  • Alternative delivery systems.
  • Manufacturing processes.

In particular, generics and biosimilars may scrutinize the scope of claims for potential infringement.


Implications for the Industry

The '221 patent’s scope signifies a strategic move to lock in exclusive rights over a promising therapeutic entity or process. Its broad claims provide robust protection but could invite litigation or opposition, especially if prior art challenges its novelty or inventive step.

Patent strategies will likely involve:

  • Using the patent as a blocking patent to prevent market entry.
  • Filing secondary patents (e.g., per formulation or method of use) to extend market exclusivity.
  • Monitoring or challenging similar patents through inter partes reviews or litigation.

Regulatory and Commercial Outlook

The patent’s commercial value hinges on:

  • Regulatory approval status of the underlying drug.
  • Market size and unmet needs.
  • Existing competition and patent barriers.

A strong patent landscape with overlapping patents could delay generic entry or favor licensing agreements.


Conclusion

The '221 patent demonstrates a carefully drafted, strategically broad claim set designed to secure a dominant position in a specific therapeutic or chemical space. Its scope balances specificity and breadth to maximize protection while navigating potential prior art challenges. Its placement within the patent landscape suggests it will serve as a cornerstone patent for its owners, influencing market dynamics and patent enforcement strategies.


Key Takeaways

  • The '221 patent’s claims likely cover a novel chemical entity or manufacturing process, with broad language to prevent easy circumvention.
  • Its strategic scope aims to block competitors and secure market exclusivity in its therapeutic area.
  • The patent landscape surrounding this patent involves multiple overlapping patents and pending applications, requiring vigilant FTO analysis.
  • The patent’s strength will depend on its eligibility and robustness against prior art challenges.
  • For industry stakeholders, the patent underscores the importance of comprehensive patent landscaping and proactive IP management in highly competitive pharmaceutical sectors.

FAQs

1. What is the primary innovation claimed in U.S. Patent 11,655,221?
The '221 patent claims a specific chemical compound, formulation, or manufacturing process with demonstrated therapeutic advantages, with independent claims likely covering the core structure or method.

2. How broad are the claims, and can they be circumvented?
The claims are designed to be broad, encompassing a class of compounds or methods, but may be challenged through prior art or design-arounds if similar compounds or techniques exist.

3. How does this patent fit within the existing patent landscape?
It builds on prior patents by focusing on novel structural features or processes that differentiate it from previous disclosures; however, overlapping patents may still exist.

4. What are the implications for generic pharmaceutical companies?
The patent potentially delays generic entry by providing strong exclusivity rights, but competitors may challenge its validity or seek licensing agreements.

5. Can this patent be enforced globally?
While granted in the U.S., similar applications likely exist in other jurisdictions, forming a patent family for international protection, but enforcement depends on local patent laws and examination results.


Sources

  1. U.S. Patent and Trademark Office. Patent Database.
  2. Pharmaceutical patent law references.
  3. Industry patent landscaping reports.
  4. Patent jurisprudence regarding pharmaceutical claims.

More… ↓

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Drugs Protected by US Patent 11,655,221

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Insmed Inc BRINSUPRI brensocatib TABLET;ORAL 217673-001 Aug 12, 2025 RX Yes No 11,655,221 ⤷  Get Started Free Y TREATMENT OF NON-CYSTIC FIBROSIS BRONCHIECTASIS IN PATIENTS 12 YEARS OF AGE AND OLDER ⤷  Get Started Free
Insmed Inc BRINSUPRI brensocatib TABLET;ORAL 217673-002 Aug 12, 2025 RX Yes Yes 11,655,221 ⤷  Get Started Free Y TREATMENT OF NON-CYSTIC FIBROSIS BRONCHIECTASIS IN PATIENTS 12 YEARS OF AGE AND OLDER ⤷  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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