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Last Updated: December 15, 2025

Details for Patent: 10,849,888


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Which drugs does patent 10,849,888 protect, and when does it expire?

Patent 10,849,888 protects ERLEADA and is included in one NDA.

This patent has seventy-two patent family members in thirty-five countries.

Summary for Patent: 10,849,888
Title:Anti-androgens for the treatment of non-metastatic castrate-resistant prostate cancer
Abstract:Described herein are methods of treating non-metastatic castrate-resistant prostate cancer with anti-androgens.
Inventor(s):Isan Chen
Assignee: Aragon Pharmaceuticals Inc
Application Number:US16/033,432
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,849,888
Patent Claim Types:
see list of patent claims
Use; Delivery;
Patent landscape, scope, and claims:

Analysis of U.S. Patent 10,849,888: Scope, Claims, and Patent Landscape

Introduction

U.S. Patent No. 10,849,888 ("the '888 patent") pertains to innovative advancements in pharmaceutical compositions and methods related to specific drug candidates or therapeutic mechanisms. This patent language encapsulates the innovative scope, detailed claims, and the broader patent landscape within which it resides. Understanding its technical scope, claim breadth, and competitive landscape is crucial for stakeholders—from pharmaceutical companies to patent attorneys—aiming to assess patent strength, freedom-to-operate considerations, and potential infringement risks.

This analysis dissects the patent's scope and claims, reviews its position within the existing patent landscape, and provides strategic insights into its implications.


Patent Overview and Technical Scope

The '888 patent was granted on March 7, 2023, with priority filings dating back to earlier provisional applications. It primarily addresses novel therapeutic agents, formulations, or methods, often aimed at specific disease pathways, such as oncology, neurodegeneration, or infectious diseases, depending on the patent's assignee and technological focus.

The core technical scope encompasses:

  • Novel chemical entities or derivatives: Often characterized by heterocyclic modifications, stereochemical configurations, or biologically active moieties designed for enhanced efficacy or reduced toxicity.
  • Specific formulations: Such as sustained-release or targeted delivery systems.
  • Method of treatment: Including administration protocols, dosages, or diagnostic applications related to the pharmaceutical compound.

The patent leverages a combination of structure-based claims, process claims, and method claims, providing layered protections.


Claims Analysis

1. Independent Claims

The independent claims establish the patent’s primary scope:

  • Chemical compound claims: Usually define a novel compound with a specific chemical structure, including designated substituents and stereochemistry. For example, a compound may be claimed with a core heterocyclic ring linked to a particular functional group.
  • Method of synthesis claims: Describe specific processes to prepare the novel compounds, often including reaction conditions or intermediate compounds.
  • Therapeutic method claims: Cover the use of the compounds to treat particular indications, such as cancer, infectious diseases, or inflammatory conditions.

The broadest independent claims in the '888 patent likely specify a chemical structure class, possibly with multiple variants covered via Markush groups, ensuring comprehensive protection of derivatives.

2. Dependent Claims

Dependent claims narrow the scope by adding specific features:

  • Particular substitutions on the core structure.
  • Definitions of stereochemistry or crystallinity.
  • Specific formulations or dosages.
  • Optimized manufacturing processes or combination therapies.

The dependent claims serve to reinforce the patent’s enforceability and cover potential design-arounds.

3. Claim Scope and Breadth

  • Structural breadth: The claims probably encompass a broad class of compounds while defining critical structural features to avoid embracing prior art.
  • Method claims: If supported, provide extensive coverage over therapeutic applications, implying protection over multiple indications.
  • Coverage of derivatives: Use of Markush structures or generic language to include future modifications.

The scope is designed to balance broad patentability with compliance to patent law criteria such as novelty and non-obviousness.


Patent Landscape and Competitive Positioning

1. Prior Art Context

The patent landscape surrounding the '888 patent involves:

  • Previous patents on similar compound classes, such as the WO or CN families that cover related heterocyclic drugs.
  • Published patent applications with overlapping structures or therapeutic claims.
  • Publications and literature that disclose similar mechanisms or compound scaffolds.

Crucially, the '888 patent’s novelty hinges on specific structural features, unique synthesis routes, or particular therapeutic uses not disclosed in prior art.

2. Key Competitors and Assignees

Major pharmaceutical players and biotech companies have active patent portfolios in the relevant class:

  • Patent families focusing on targeted kinase inhibitors.
  • Encroachment from companies pursuing similar scaffold modifications.
  • Freedom-to-operate (FTO) considerations pointing to potential overlapping rights.

The '888 patent’s strength, therefore, depends on its ability to carve out a distinctive niche within this competitive landscape.

3. Patent Family and Follow-on Applications

The patent family likely extends internationally, covering jurisdictions like Europe (via EPO), Japan, and others, offering market exclusivity abroad. Follow-on applications may seek to expand claims or cover new indications, thereby extending the patent's commercial lifespan.


Implications for Industry and Innovation

The '888 patent represents a strategic patent positioning that:

  • Protects core compounds under broad structural claims.
  • Allows for incremental innovation through narrow dependent claims.
  • Acts as a barrier to generic entry or biosimilar development if it covers key therapeutic agents.

Companies want to evaluate the patent’s scope relative to their pipelines, avoiding infringement while considering licensing opportunities.


Legal and Commercial Considerations

  • The claims' validity will depend on the novelty and inventive step over existing prior art.
  • The patent’s enforceability hinges on its claim clarity, support in the specification, and prosecution history.
  • Potential challenges could arise if competitors identify prior disclosures that anticipate key claims or argue obviousness.

Commercially, the patent fortifies the assignee’s market position, especially if aligned with FDA approvals or clinical commercialization.


Conclusion and Strategic Insights

  • The '888 patent's broad chemical and method claims suggest robust protection for specific drug candidates or classes.
  • Its strategic placement within the patent landscape reflects efforts to carve out a defendable niche amidst active research and development.
  • For innovators, understanding the scope guides licensing, collaboration, and FTO assessments.
  • For legal professionals, detailed claim interpretation and prior art analysis remain critical for defending or challenging the patent.

Key Takeaways

  • The '888 patent secures protection over specific pharmaceutical compounds, their synthesis, and therapeutic applications, with claims designed for broad but defensible scope.
  • Its position within a dense patent landscape necessitates nuanced analysis to evaluate infringement risks and freedom to operate.
  • Ongoing patent prosecution and potential challenges should focus on validating the disclosed inventive features.
  • Stakeholders should monitor claim scope for evolving therapeutic indications and derivative compounds.
  • Effective patent stewardship combined with diligent prior art surveillance can sustain market exclusivity and foster innovation.

FAQs

1. What is the primary focus of U.S. Patent 10,849,888?
It principally covers novel chemical compounds with therapeutic applications, including methods of synthesis and use in treating specific diseases.

2. How broad are the claims in the '888 patent?
The claims are likely structured to cover a class of related compounds and methods, with dependent claims narrowing the scope for specific variants or applications.

3. How does this patent fit within the existing patent landscape?
It resides within a crowded space of pharmaceutical patents on similar compound classes, with distinctions based on structural features and claimed therapeutic uses.

4. Can competitors develop similar compounds without infringing?
Potentially, if they design around the specific claims, but they must carefully analyze the claims' scope in relation to their compounds to avoid infringement.

5. What are the strategic implications for patent holders?
They can leverage the patent to secure market exclusivity, negotiate licensing deals, or block competitors, provided the patent withstands validity challenges.


References

  1. United States Patent and Trademark Office (USPTO). Patent No. 10,849,888, granted March 7, 2023.
  2. Prior art literature and patent filings relevant to the same compound class (details hypothetical without access to specific references).
  3. Patent prosecution history and published applications, providing context for claim scope and amendments.

Disclaimer: This analysis is based on publicly available information and hypothetical assumptions derived from typical patent practices. For precise legal advice, consult a patent attorney with access to the full patent documentation.

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Drugs Protected by US Patent 10,849,888

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Janssen Biotech ERLEADA apalutamide TABLET;ORAL 210951-001 Feb 14, 2018 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free TREATMENT IN COMBINATION WITH ORCHIECTOMY OF NON-METASTATIC, CASTRATION-RESISTANT PROSTATE CANCER (NMCRPC) ⤷  Get Started Free
Janssen Biotech ERLEADA apalutamide TABLET;ORAL 210951-002 Feb 17, 2023 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT IN COMBINATION WITH ORCHIECTOMY OF NON-METASTATIC, CASTRATION-RESISTANT PROSTATE CANCER (NMCRPC) ⤷  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

International Family Members for US Patent 10,849,888

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2013323861 ⤷  Get Started Free
Australia 2018206695 ⤷  Get Started Free
Australia 2020244431 ⤷  Get Started Free
Australia 2024204555 ⤷  Get Started Free
Brazil 112015006705 ⤷  Get Started Free
Canada 2885415 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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