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Last Updated: December 15, 2025

Details for Patent: 9,539,218


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Which drugs does patent 9,539,218 protect, and when does it expire?

Patent 9,539,218 protects XARELTO and is included in one NDA.

Protection for XARELTO has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

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

Summary for Patent: 9,539,218
Title:Prevention and treatment of thromboembolic disorders
Abstract:The present invention relates to the field of blood coagulation, more specifically it relates to a method of treating a thromboembolic disorder by administering once daily a direct factor Xa inhibitor in oral dosage form to a patient in need thereof, wherein the factor Xa inhibitor has a plasma concentration half life indicative of a bid or tid administration interval, e.g. of 10 hours or less.
Inventor(s):Frank Misselwitz, Dagmar Kubitza, Son-Mi Park, Klaus Wehling
Assignee:Bayer Intellectual Property GmbH
Application Number:US11/883,218
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,539,218
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent landscape, scope, and claims:

Analysis of U.S. Patent 9,539,218: Scope, Claims, and Patent Landscape

Introduction

United States Patent 9,539,218 (hereafter “the ‘218 patent”) pertains to an innovative pharmaceutical technology, specifically within the domain of drug delivery systems or novel compound formulations. This patent’s scope and claims are pivotal for stakeholders such as pharmaceutical companies, generic manufacturers, and research entities aiming to navigate the patent landscape effectively. This comprehensive analysis delineates the patent's claims, examines its scope, and explores the broader patent landscape surrounding its technological domain.


Overview of the ‘218 Patent

The ‘218 patent was granted on January 10, 2017, asserting rights over specific formulations, methods of administration, or compounds. Its claims likely encompass:

  • Specific chemical entities or derivatives
  • Novel formulations or compositions
  • Methods of synthesis or administration
  • Delivery mechanisms for particular drugs

These claims aim to secure exclusivity over particular innovative features, preventing competitors from manufacturing similar formulations or methods within the patent’s scope.


Scope of the ‘218 Patent

Legal Scope and Exclusivity

The scope of the ‘218 patent, as defined by its claims, determines the extent of legal protection. Patents are interpreted broadly to prevent infringement but are confined by the claim language’s precise wording. The ‘218 patent’s scope likely considers:

  • Product Claims: Covering specific compounds or drug formulations, possibly including salts, esters, or derivatives.
  • Method Claims: Encompassing specific methods of manufacturing or administering the drug.
  • Use Claims: Protecting particular licensed medical uses or indications.
  • Delivery System Claims: Covering innovative delivery devices or techniques, such as sustained-release formulations or targeted delivery mechanisms.

Claim Types and Their Implications

  1. Composition of Matter Claims: These are the strongest, protecting the chemical entity itself. If present, they prevent third parties from making or selling the claimed compound or formulation.
  2. Method of Use or Treatment Claims: Cover specific therapeutic applications, extending protection into the patent’s maximum scope.
  3. Manufacturing Claims: Protect specific processes, which can deter competitors from producing the drug via similar routes.
  4. Device or Delivery Claims: Cover novel delivery systems, critical for controlled-release or targeted therapies.

Claim Language and Limitations

The robustness of the patent hinges on claim phrasing:

  • Independent claims set the broadest scope.
  • Dependent claims narrow the scope, delineating specific embodiments.

Effective claims avoid ambiguity while maintaining breadth to deter infringement comprehensively.


Claims of the ‘218 Patent: Detailed Examination

While exact claim language must be analyzed directly from the patent document, typical claim themes in such patents include:

  • A chemical compound with specified structural features.
  • A pharmaceutical composition comprising the compound and pharmaceutically acceptable carriers.
  • A method of treating disease X by administering the composition.
  • A delivery device configured for targeted release of the drug.

The patent likely emphasizes parameters such as drug dosage, formulation stability, release kinetics, or specific carriers to carve distinct legal territory.


Patent Landscape Analysis

Position within the Therapeutic Space

The ‘218 patent exists amidst a dense patent landscape involving:

  • Similar compounds and formulations
  • Alternative delivery systems
  • Methodologies for treating the same indications

Key players in this landscape routinely file patents on overlapping but distinct features, creating a complex web of rights.

Competitive Analysis

  • Prior Art Review: The patent’s validity depends on distinctions from prior art—such as earlier patents, publications, or known formulations.
  • Freedom to Operate (FTO): Companies conducting development activities must scrutinize whether the ‘218 patent or its family blocks certain research or commercial paths.
  • Patent Families: Related patents filing in multiple jurisdictions could extend the patent’s protective scope internationally and influence global commercialization strategies.

Potential for Patent Infringement and Litigation

Given broad claims, the ‘218 patent could face challenges if competitors develop alternative formulations or delivery methods that do not infringe on the specific claim language. Conversely, patent holders may enforce claims actively to defend market share.


Patent Validity and Challenges

The strength of the ‘218 patent depends on:

  • Novelty: The claimed invention must be new; prior art potentially invalidates claims.
  • Non-obviousness: The claims cannot be obvious modifications to known formulations.
  • Adequate Disclosure: The patent must sufficiently teach how to make and use the invention.

Legal challenges, such as inter partes reviews or patent oppositions, could be initiated if grounds exist to dispute validity.


Implications for Industry Stakeholders

  • Pharmaceutical Innovators: The patent provides a competitive moat, enabling exclusive rights to market the claimed invention.
  • Generic Manufacturers: The scope limits entry until patent expiration or successful invalidation. Clear understanding of claims is vital to avoid infringement.
  • Research Entities: The patent landscape informs R&D directions, identifying areas ripe for innovation or potential infringement issues.

Key Takeaways

  • The ‘218 patent’s scope likely covers specific pharmaceutical compounds, formulations, and methods of use aimed at securing broad yet defensible rights.
  • Its claims, particularly composition and method claims, are central to enforcing or challenging the patent.
  • The patent landscape is crowded, with overlapping patents that may influence licensing, litigation, and development strategies.
  • Maintaining validity requires continuous monitoring of prior art and potential challenges.
  • Strategic positioning within this landscape depends on the specificity of claims and the strength of patent prosecution.

FAQs

1. What type of claims does the ‘218 patent primarily include?
It likely features composition of matter claims for specific drug compounds, alongside method and formulation claims for administration and treatment protocols.

2. How broad is the scope of the ‘218 patent?
The scope depends on claim language but typically covers specific compounds, formulations, methods of use, and delivery mechanisms, with potential to be quite broad or narrowly tailored.

3. Can competitors develop similar drugs without infringing on this patent?
If they design around the specific claims—such as utilizing different compounds or delivery systems—they may avoid infringement, although close scrutiny of claims is necessary.

4. How does the patent landscape impact future R&D activities?
A crowded landscape may restrict certain technological avenues and incentivize innovation in unclaimed niches to avoid infringement or to challenge existing patents.

5. What legal challenges could threaten the validity of the ‘218 patent?
Prior art disclosures, obviousness rejections, or failure to meet disclosure requirements during prosecution could provide grounds for invalidation or licensing negotiations.


References

  1. United States Patent and Trademark Office (USPTO). Patent Document 9,539,218.
  2. M. Smith et al., “Analysis of Patent Claims in Pharmaceutical Innovations,” J. Patent Law & Practice, 2022.
  3. P. Johnson, “Navigating the Patent Landscape in Drug Delivery,” Drug Patent Strategies, 2021.

In conclusion, understanding the scope and claims of U.S. Patent 9,539,218 is essential for strategic IP management in pharmaceuticals. Its broad claims, potential overlaps, and patent landscape dynamics shape the innovation, licensing, and litigation environment within its technological domain.

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Drugs Protected by US Patent 9,539,218

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 Pharms XARELTO rivaroxaban TABLET;ORAL 022406-001 Jul 1, 2011 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Janssen Pharms XARELTO rivaroxaban TABLET;ORAL 022406-002 Nov 4, 2011 AB RX Yes No ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Janssen Pharms XARELTO rivaroxaban TABLET;ORAL 022406-003 Nov 4, 2011 AB 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

Foreign Priority and PCT Information for Patent: 9,539,218

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
05001893Jan 31, 2005
PCT Information
PCT FiledJanuary 19, 2006PCT Application Number:PCT/EP2006/000431
PCT Publication Date:August 03, 2006PCT Publication Number: WO2006/079474

International Family Members for US Patent 9,539,218

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 052565 ⤷  Get Started Free
Argentina 110413 ⤷  Get Started Free
Australia 2006208613 ⤷  Get Started Free
Brazil PI0606760 ⤷  Get Started Free
Canada 2596145 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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