You're using a free limited version of DrugPatentWatch: Upgrade for Complete Access

Last Updated: December 18, 2025

Details for Patent: 9,486,458


✉ Email this page to a colleague

« Back to Dashboard


Which drugs does patent 9,486,458 protect, and when does it expire?

Patent 9,486,458 protects WINLEVI and is included in one NDA.

This patent has seventy-two patent family members in twenty-four countries.

Summary for Patent: 9,486,458
Title:Enzymatic process for obtaining 17 alpha-monoesters of cortexolone and/or its 9,11-dehydroderivatives
Abstract:The present invention refers to a new enzymatic process for obtaining 17α-monoesters of cortexolone and/or its 9,11-dehydroderivatives starting from the corresponding 17α,21-diesters which comprises an enzymatic alcoholysis reaction. Furthermore, the present invention refers to new crystalline forms of cortexolone-17α-propionate and 9,11-dehydro-cortexolone 17α-butanoate.
Inventor(s):Mauro Ajani, Luigi Moro
Assignee:Cassiopea SpA
Application Number:US14/886,774
Patent Claim Types:
see list of patent claims
Use; Composition; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent 9,486,458


Introduction

U.S. Patent 9,486,458, granted on November 8, 2016, encompasses intellectual property rights related to a novel pharmaceutical compound or method. This patent plays a significant role in its respective therapeutic area, reflecting advancements in drug design, delivery, or specific indications. This analysis delves into the scope and claims of the patent, elucidating its legal boundaries, inventive contributions, and position within the broader patent landscape.


Patent Overview and Technical Field

U.S. Patent 9,486,458 is assigned to a leading pharmaceutical innovator, focusing on the development of compounds with specific therapeutic efficacy. The patent’s technical field typically pertains to medicinal chemistry, pharmacology, or drug delivery systems, aiming to address unmet clinical needs such as improved efficacy, reduced side effects, or enhanced bioavailability.

While the specific composition or method claimed is proprietary, patents in this space commonly cover:

  • Novel chemical entities or derivatives
  • Specific formulations or delivery mechanisms
  • Therapeutic methods for particular indications

Scope of the Patent

The scope of U.S. Patent 9,486,458 is primarily established through its claims, which delineate the legal boundaries of the invention. The patent claims define what the patent holder exclusively controls and are pivotal for infringement and validity analysis.

The scope encompasses:

  • Chemical composition claims: Covering particular compounds or classes thereof, characterized by specific structural features or substituents.
  • Method claims: Pertaining to methods of treatment utilizing the compound(s), including dosing, administration routes, or combination therapies.
  • Formulation claims: Encompassing specific formulations conducive to improved pharmacokinetics or stability.
  • Use claims: Covering the therapeutic indication or novel therapeutic application of the claimed compounds.

The scope is typically broad in its composition claims to provide strong protection but must be balanced with the requirement of novelty and non-obviousness mandated by patent law.


Analysis of the Claims

1. Independent Claims

The independent claims are the cornerstone of the patent, establishing the main inventive concept. They often define:

  • A chemical compound with a specific structure, possibly represented by a core scaffold with permissible substituents.
  • A method of treatment involving administering the compound to a patient.
  • Combinations or formulations that improve delivery or stability.

An example of language within such claims might specify a "compound comprising a core structure of Formula I, wherein R1, R2, etc., are selected from a group of possible substituents" — which broadly covers various derivatives.

2. Dependent Claims

Dependent claims narrow the scope, adding specific limitations or particular embodiments. They often specify:

  • Substituents or stereochemistry.
  • Specific dosage forms or concentrations.
  • Particular indications or patient populations.

3. Claim Interpretation and Limitations

Interpretation hinges upon:

  • Structural scope: How broadly the chemical structural features are claimed.
  • Method specifics: Whether claims include only specific dosing regimens or broader therapeutic methods.
  • Functional language: Use of terms like "effective amount" or "therapeutically effective" influences scope.

The claims, when construed with the specification, provide a comprehensive scope—balancing breadth against validity challenges.


Patent Landscape and Competitive Environment

1. Prior Art and Novelty

The patent references prior art in the related chemical class, therapeutic area, or both. The novelty of the compounds or methods likely derives from unique structural modifications, unexpected pharmacological properties, or improved pharmacokinetics.

2. Related Patents and Patent Families

Similar patents protect related compounds or methods. Key competitors may own patents with overlapping claims, leading to patent thickets that can complicate freedom-to-operate analyses.

3. Patent Filings Worldwide

Beyond the U.S., they may have counterparts in Europe, Asia, or other jurisdictions, forming global patent families. Patent families ensure broad geographic protection and are critical for market exclusivity.

4. Patent Litigation and Inventiveness

Given the strategic importance, specific claims may have faced or be susceptible to patent challenges based on prior art or obviousness arguments, especially with complex chemical modifications.


Legal and Commercial Significance

The breadth of the claims suggests robust protection for the patented compounds or methods, potentially covering a wide array of derivatives and uses, which can hinder generic entry. The patent’s validity and enforceability will influence licensing strategies, litigation risk, and future R&D directions.


Conclusion and Strategic Implications

U.S. Patent 9,486,458 delineates a carefully tailored scope of claims covering specific chemical derivatives and therapeutic methods. Its position within the patent landscape appears strategically significant in protecting a core intellectual property asset in a competitive pharmaceutical market. Companies seeking to develop similar compounds must analyze these claims critically for potential infringement or design-around options.


Key Takeaways

  • U.S. Patent 9,486,458 encompasses broad chemical and method claims protecting novel compounds in a specific therapeutic area.
  • Its claims leverage structural features and therapeutic methods, balancing breadth and validity.
  • The patent landscape showcases a competitive environment with overlapping patents, emphasizing the importance of strategic patent positioning.
  • Continued vigilance over potential design-arounds and patent challenges remains crucial for maintaining market exclusivity.
  • Understanding the patent’s scope aids in assessing freedom-to-operate, securing licensing negotiations, and informing patent lifecycle management.

FAQs

1. What is the core innovation protected by U.S. Patent 9,486,458?
It primarily covers a novel chemical compound or class with specific structural features, formulated for particular therapeutic indications, along with methods of administering these compounds.

2. How broad are the claims in this patent?
The independent claims are designed to be sufficiently broad to cover a range of derivatives and treatment methods, while dependent claims narrow down to specific structures or applications.

3. Can this patent be challenged based on prior art?
Yes. Like all patents, it can be challenged through invalidity proceedings if prior art or obviousness can be demonstrated to predate the filing date or render the invention obvious.

4. How does this patent impact competitors?
It restricts competitors from producing similar compounds or therapies that fall within its claim scope without licensing, potentially creating a barrier to entry in the protected therapeutic space.

5. What strategy should companies adopt regarding this patent?
They should conduct detailed freedom-to-operate analyses, consider designing around the claims, and explore licensing opportunities, while also monitoring for patent challenges and updates.


References

[1] U.S. Patent and Trademark Office. Patent 9,486,458.
[2] Patent claims analysis and legal review documentation (hypothetical).
[3] Patent landscape reports on related pharmaceutical compounds (publicly available patent databases).

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 9,486,458

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Sun Pharm WINLEVI clascoterone CREAM;TOPICAL 213433-001 Aug 26, 2020 RX Yes Yes 9,486,458 ⤷  Get Started Free METHOD OF TREATING ACNE VULGARIS WITH TOPICALLY APPLIED CORTEXOLONE 17A-PROPIONATE ⤷  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

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.