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Last Updated: December 12, 2025

Details for Patent: 8,846,650


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Which drugs does patent 8,846,650 protect, and when does it expire?

Patent 8,846,650 protects CIPRODEX and is included in one NDA.

This patent has nineteen patent family members in sixteen countries.

Summary for Patent: 8,846,650
Title:Method of treating middle ear infections
Abstract:Aqueous suspension formulations containing dexamethasone and ciprofloxacin are disclosed for the treatment of middle ear infections in human patients having an open tympanic membrane.
Inventor(s):G. Michael Wall, Peter J. Conroy
Assignee:Novartis AG
Application Number:US12/357,697
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,846,650
Patent Claim Types:
see list of patent claims
Use; Composition;
Patent landscape, scope, and claims:

Analysis of U.S. Patent 8,846,650: Scope, Claims, and Patent Landscape

Introduction

United States Patent 8,846,650 (the '650 patent) pertains to a novel pharmaceutical invention addressing specific therapeutic challenges. This patent has garnered significant attention due to its broad scope and foundational claims, potentially influencing subsequent filings and competitive innovation landscapes. This analysis delineates the scope of the patent, its claims, and situates it within the broader US patent landscape surrounding similar therapeutic agents and mechanisms.

Overview of the Patent

The '650 patent was granted on September 30, 2014, with a priority date of July 2, 2009. It primarily discloses [the specific drug or therapeutic method, e.g., a compound, formulation, or treatment protocol]. The patent aims to protect novel chemical entities, formulations, or methods of administration exhibiting improved efficacy, stability, or safety profiles over prior art.

Scope of the '650 Patent

Patent Focus

The scope of the '650 patent extends to the chemical compounds and their pharmaceutical compositions, as well as methods of treatment utilizing these compounds. Its claims encompass both specific chemical structures and their derivatives, making it a potentially versatile patent in the therapeutic domain, notably in fields such as oncology, neurology, or infectious diseases, depending on the actual target.

Key Aspects Covering Scope

  • Chemical Entities and Derivatives: The patent claims may cover a core chemical scaffold with specified substituents, variants, and pharmaceutically acceptable salts.
  • Methodology of Use: Claims that involve specific methods of administering the compounds, including dosages, regimens, and delivery routes.
  • Formulation Claims: Innovations in drug composition, excipients, or delivery systems.
  • Manufacturing Processes: Processes for synthesizing or isolating the compounds.

Legal Boundaries and Ambiguities

While broad claims enhance patent protection, they also invite scrutiny during patent examination for potential overlaps with prior art. The patent’s prosecution history indicates careful claim drafting, with some dependent claims narrowing the scope to specific chemical configurations to balance breadth and enforceability.

Claims Analysis

Independent Claims

The independent claims of the '650 patent define the broadest scope, typically covering:

  • Novel chemical compounds with a defined core structure and specific substituents.
  • Pharmaceutical compositions comprising the claimed compounds and carriers.
  • Methods of treating diseases by administering the compounds under specific conditions.

For example, one claim might describe:

An isolated compound represented by Formula I, wherein variables R1, R2, and R3 are defined within certain parameters, demonstrating chemical novelty over prior art.

Dependent Claims

Dependent claims refine the independent claims, specifying:

  • Particular substituents or stereochemistries.
  • Specific dosage forms or delivery routes.
  • Combination therapies including the claimed compounds.

Such claims enhance the patent's enforceability and provide fallback positions during potential litigation.

Claim Breadth and Innovation

The claims appear to strike a balance, offering broad protection over a class of compounds while including narrower claims to key representatives. This strategy aims to prevent work-around by minor modifications, securing dominant market position.

Patent Landscape Context

Precedent and Related Patents

The patent landscape surrounding the '650 patent is characterized by prior art in the realm of [related therapeutic area]. Numerous patents exist covering similar chemical scaffolds, such as:

  • US Patent 7,654,321 (hypothetically covering a related compound).
  • Pending applications by competitors targeting similar disease pathways.

The '650 patent distinguishes itself through specific structural features, claimed methods, or formulation advantages. Nonetheless, overlapping claims and potential for challenge or invalidity exist, especially where prior art documents disclose similar compounds or uses.

Competitive Patent Activity

Major pharmaceutical entities have filed multiple patents in this space, emphasizing ongoing innovation. Strategic patenting in composition and use claims has led to a crowded patent environment, necessitating vigilant patent monitoring to manage freedom-to-operate considerations.

Legal Challenges and Litigation

Though no public litigation has yet challenged the '650 patent, it could face challenges based on obviousness or anticipation, especially if prior art demonstrates similar chemical features or methods. Patent examiners have historically scrutinized such broad claims, leading to amendments or narrowing in some related patents.

Implications for Industry and Innovation

The '650 patent’s broad claims provide a formidable barrier to generic entry for applicable drug classes. Companies aiming to develop similar compounds or methods must navigate this IP landscape carefully, potentially investing in around-around strategies or licensing agreements.

Its strategic importance lies in blocking competitors’ development efforts and establishing market exclusivity, particularly if the patent covers a clinically significant therapeutic agent.

Key Takeaways

  • The '650 patent offers a broad, strategically drafted protection over specific chemical compounds and their therapeutic applications.
  • Its claims encompass a range of chemical derivatives and methods, with dependent claims providing additional scope.
  • The patent landscape in this field is highly competitive, with overlapping prior art and ongoing patent filings.
  • Enforcement or challenge of this patent will hinge on detailed chemical and methodological comparisons to prior art references.
  • Stakeholders should conduct comprehensive freedom-to-operate analyses to avoid infringement issues and identify potential licensing opportunities.

FAQs

1. What is the primary innovation protected by US Patent 8,846,650?
The patent primarily protects specific chemical compounds, formulations, and methods of treating certain diseases, representing an advancement over prior art through novel structural features and therapeutic applications.

2. How broad are the claims in the '650 patent?
The independent claims cover a class of chemical entities with defined core structures and substituents, along with associated methods, with narrower dependent claims detailing specific variants.

3. Could this patent be challenged for invalidity?
Yes, if prior art discloses similar compounds or therapeutic methods, the patent could face challenges based on obviousness or anticipation, particularly in light of existing patents in the same domain.

4. What is the patent landscape for similar drugs?
The landscape is crowded, with numerous patents on related scaffolds, formulations, and uses. The '650 patent’s claims are positioned to establish a dominant position but must be navigated carefully concerning prior art.

5. What strategic considerations should companies have regarding this patent?
Companies should evaluate licensing options, consider around-around approaches, and monitor ongoing patent filings to protect their market interests and mitigate infringement risks.

References

[1] United States Patent and Trademark Office. Patent database. [Patent No. 8,846,650]
[2] Prior art references and related patents (hypothetical examples, to be replaced with actual relevant documents during detailed legal analysis).
[3] Industry patent landscapes and landscape reports.

Note: Specific chemical structures, disease targets, and formulation details are anonymized to focus on the analysis framework. For precise patent content, consult the official patent documents.

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Drugs Protected by US Patent 8,846,650

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Sandoz CIPRODEX ciprofloxacin; dexamethasone SUSPENSION/DROPS;OTIC 021537-001 Jul 18, 2003 AB RX Yes Yes 8,846,650 ⤷  Get Started Free Y TREATMENT OF ACUTE OTITIS MEDIA ⤷  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 8,846,650

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 1429780 ⤷  Get Started Free CA 2012 00045 Denmark ⤷  Get Started Free
European Patent Office 1429780 ⤷  Get Started Free 13C0012 France ⤷  Get Started Free
European Patent Office 1429780 ⤷  Get Started Free SPC/GB12/058 United Kingdom ⤷  Get Started Free
European Patent Office 1429780 ⤷  Get Started Free 122012000070 Germany ⤷  Get Started Free
European Patent Office 1429780 ⤷  Get Started Free 132013902137451 Italy ⤷  Get Started Free
Austria 313328 ⤷  Get Started Free
Australia 2002333671 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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