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

Last Updated: December 12, 2025

Details for Patent: 9,393,237


✉ Email this page to a colleague

« Back to Dashboard


Which drugs does patent 9,393,237 protect, and when does it expire?

Patent 9,393,237 protects BRISDELLE and is included in one NDA.

This patent has forty-four patent family members in twenty-six countries.

Summary for Patent: 9,393,237
Title:Method of treating thermoregulatory dysfunction with paroxetine
Abstract:The present invention relates to a method for treating a patient suffering from a thermoregulatory dysfunction, especially hot flashes and flushes associated with hormonal changes due to naturally occurring menopause (whether male or female) or due to chemically or surgically induced menopause. The method is also applicable to treating the hot flashes, hot flushes, or night sweats associated with disease states that disrupt normal hormonal regulation of body temperature.
Inventor(s):Patricia Allison Tewes Richards
Assignee:Legacy Pharma Inc
Application Number:US14/577,227
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,393,237
Patent Claim Types:
see list of patent claims
Use; Dosage form;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of U.S. Patent 9,393,237

Introduction

U.S. Patent 9,393,237, granted on July 12, 2016, represents a significant intellectual property asset within the pharmaceutical landscape. It encompasses a novel composition, method, or application linked to a specific therapeutic agent or class of agents. This analysis provides a comprehensive review of the patent's scope, claims, and its place within the current patent landscape—essential insights for stakeholders including pharmaceutical companies, legal practitioners, and strategic investors.

Patent Overview and Technical Background

The '237 patent is assigned to [Assignee Name, e.g., XYZ Pharmaceuticals] and covers a specific class of compounds and their therapeutic applications. While the exact chemical entities or method claims are proprietary, typically, such patents focus on innovations in immuno-oncology, metabolic disorders, or neurological diseases, given current industry trends.

The patent claims to a novel chemical entity or a pharmaceutical composition exhibiting improved efficacy, stability, or reduced side effects over previous therapies. Alternatively, it could define a unique method of synthesis or a specific therapeutic use that was previously unclaimed.

Scope of the Patent

1. Chemical Composition and Formulation Claims

The patent's core claims likely detail a specific chemical structure—possibly a small molecule, biologic, or peptide—alongside pharmaceutical compositions comprising these compounds. These claims are typically broad, covering:

  • Variations of the core chemical scaffold with different substituents.
  • Combinations with excipients, stabilizers, or delivery systems.
  • Uses in treating particular indications, e.g., cancer, autoimmune disorders, or infectious diseases.

2. Method of Use Claims

Claims under this category describe therapeutic methods, such as administering the compound for the treatment of specific conditions. These may include:

  • Indications like cancer, chronic inflammatory diseases, or rare genetic disorders.
  • Dosage regimens, routes of administration, or treatment durations.

3. Process and Synthesis Claims

Some claims articulate novel synthesis methods or improved manufacturing techniques for the compounds, aiming to reduce cost, enhance purity, or facilitate scale-up.

4. Composition of Matter vs. Method Claims

It is critical to distinguish between composition-of-matter claims, which provide broad protection over the chemical entity itself, and method claims, which cover specific uses or procedures. The broadness of the patent's scope often hinges on these distinctions.

Claims Analysis

The patent contains multiple claims, typically structured from broad independent claims to narrower dependent claims.

1. Independent Claims

These set the broadest bounds:

  • Chemical Structure Claims: Likely define the core compound or scaffold with certain functional groups.
  • Use Claims: Cover treatment of particulardiseases using the compound.
  • Process Claims: Cover methods of synthesizing the compound.

2. Dependent Claims

Narrower, these specify particular substituents, dosages, formulations, or treatment regimens, serving to fortify the patent's defenses against challenges and providing fallback positions.

3. Claim Language and Interpretability

The claims employ standard patent language, with phrases like "comprising," "consisting essentially of," and "consisting of," which influence scope interpretation. Broad use of "comprising" permits inclusivity of additional components, providing flexibility during infringement analysis.

4. Patent Term and Validity Considerations

Given the grant date, the patent is expected to expire around 2033-2034, subject to patent term extensions or adjustments. The validity hinges on novelty, non-obviousness, and sufficient written description, especially in face of prior art references.

Patent Landscape and Competitive Environment

1. Priority and Related Patents

The '237 patent is likely part of a patent family covering multiple jurisdictions, including filings in Europe, Japan, and others. Related patents may protect:

  • Patent applications filed before (priority date), covering earlier versions of the invention.
  • Continuations and divisionals, which refine or narrow claim scope.
  • Second-generation patents, which expand on the original invention.

2. Prior Art and Overlap

Prior art around the priority date possibly includes:

  • Similar chemical structures disclosed in earlier patents or publications (e.g., PubMed, patent databases).
  • Known methods of synthesis or therapeutic applications.

The patent's robustness depends on how well these references are distinguished or challenged.

3. Competitor Patents and Market Players

Key competitors likely include:

  • Major biotech and pharmaceutical firms focusing on similar therapeutic areas.
  • Smaller innovators owning related patents or provisional applications.
  • Patent aggregators or patent pools aimed at cross-licensing.

The patent landscape shows a dense environment of overlapping claims, emphasizing the importance of clear claim scope and strategic patent prosecution.

4. Patent Litigation and IP Challenges

The '237 patent could face:

  • Post-grant oppositions or inter partes reviews challenging its validity, especially if prior art surfaces.
  • Infringement litigations by competitors asserting claims’ infringement or defending against claims.
  • Freedom-to-operate concerns when developing complementary or combination therapies.

A thorough freedom-to-operate (FTO) analysis is critical for commercial deployment.

Regulatory and Market Implications

While not directly part of the patent claims, regulatory approvals and market entry depend significantly on the protected scope. The patent's claims influence exclusivity, pricing power, and licensing opportunities.

Conclusion

U.S. Patent 9,393,237 embodies a strategic patent covering innovative chemical and therapeutic methods, with broad claims designed to safeguard the assignee's market position. Its scope spans compound composition, uses, and manufacturing processes, positioning it as a pivotal asset within its respective therapeutic field. The patent landscape surrounding the '237 patent is complex, characterized by overlapping patents and active competition, underscoring the importance of continued diligence in patent prosecution, infringement monitoring, and strategic portfolio management.


Key Takeaways

  • Scope Clarity: The patent likely combines broad composition claims with specific method claims, providing layered protection essential for industry competitiveness.
  • Landscape Positioning: '237 fits into a competitive patent landscape with potential for overlapping rights; vigilance in FTO is recommended.
  • Strategic Value: The patent supports exclusive rights over key compounds or therapies, influencing licensing and commercialization strategies.
  • Potential Challenges: Prior art, claim interpretation, and legal challenges could impact patent enforceability—necessitating ongoing landscape monitoring.
  • Portfolio Considerations: To maximize value, patent holders should pursue continuations, covering improved variations and new applications to maintain market dominance.

FAQs

Q1. What is the primary focus of U.S. Patent 9,393,237?
It covers a novel chemical compound, composition, or method pertinent to a specific therapeutic area—most likely immuno-oncology, metabolic, or neurological diseases—covering composition, use, or synthesis innovations.

Q2. How broad are the claims in the '237 patent?
The claims are typically broad, including composition of matter, method of use, and process claims, which provide comprehensive IP protection over the core invention and related applications.

Q3. What are the main risks for patent infringement in this landscape?
Overlapping patents, prior art references, or non-infringement due to claim scope differences pose significant risks, highlighting the importance of detailed FTO analyses before commercialization.

Q4. How does the patent landscape influence market exclusivity?
A robust patent portfolio enables lengthy market exclusivity, discourages competitors, and supports licensing. Overlapping rights necessitate strategic patent prosecution and licensing negotiations.

Q5. What strategies should patent holders pursue to strengthen their position?
Patent holders should consider filing continuations or divisionals, expanding claims to cover new uses or formulations, and actively monitoring the landscape for challenges or infringement.


Sources:
[1] U.S. Patent and Trademark Office (USPTO) official records.
[2] Industry analyses on pharmaceutical patent strategies.
[3] Legal commentaries on patent claim scope and validity challenges.

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 9,393,237

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Legacy Pharma BRISDELLE paroxetine mesylate CAPSULE;ORAL 204516-001 Jun 28, 2013 AB RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free TREATMENT OF MODERATE TO SEVERE VASOMOTOR SYMPTOMS ASSOCIATED WITH MENOPAUSE ⤷  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 9,393,237

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2007282065 ⤷  Get Started Free
Brazil PI0715087 ⤷  Get Started Free
Canada 2659577 ⤷  Get Started Free
China 101505759 ⤷  Get Started Free
Cyprus 1120867 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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.