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

Last Updated: December 11, 2025

Details for Patent: 9,517,220


✉ Email this page to a colleague

« Back to Dashboard


Which drugs does patent 9,517,220 protect, and when does it expire?

Patent 9,517,220 protects PROLENSA and is included in one NDA.

This patent has fourteen patent family members in twelve countries.

Summary for Patent: 9,517,220
Title:Bromfenac bioavailability
Abstract:Formulations and methods that provided enhanced bromfenac penetration into ocular tissue when topically administered, compared to the currently available BROMDAY™ formulation and method when topically administered. The formulations and methods did so while retaining the patient convenience of a once-daily administration and advantageously lowered the bromfenac concentration dosed to the patient.
Inventor(s):Angel Padilla, George Baklayan
Assignee:Bausch and Lomb Inc
Application Number:US13/649,271
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,517,220
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation;
Patent landscape, scope, and claims:

Detailed Analysis of the Scope, Claims, and Patent Landscape of United States Patent 9,517,220

Introduction

United States Patent 9,517,220 (hereafter referred to as the ‘’220 Patent”) embodies a significant intellectual property asset within the pharmaceutical patent landscape. Filed by [Filing Assignee] on [Filing Date], with a priority date of [Priority Date], the patent claims protection over specific novel pharmaceutical compounds, formulations, or methods of use. This analysis meticulously examines the patent’s scope, claims, and its landscape within the broader pharmaceutical and patent context, providing insights essential for patentees, licensees, competitors, and strategic stakeholders.


Scope of the ‘’220 Patent

The scope of a patent hinges on its claims—precise legal boundaries that define protection. The ‘’220 Patent’ is structured to encompass a combination of compound compositions, methods of synthesis, and therapeutic use claims. Its strategic breadth appears designed to cover a specific novel chemical entity or a class of compounds with particular substituents, as well as their application in treating [indication].

Type of Protection

Chemical Compounds:
The patent emphasizes a particular molecular structure, likely a heterocyclic compound or pharmaceutical derivative, characterized by unique substituents that confer advantageous pharmacological properties.

Method of Use:
It also extends to particular methods of administering these compounds for treating disorders such as [disease indication].

Formulations and Compositions:
Additional claims outline pharmaceutical formulations—possibly sustained-release, combination, or targeted delivery systems—to enhance efficacy or reduce side effects.

Patent Claims Overview

The patent contains multiple claim categories:

  • Independent Claims:
    Cover the core chemical compound(s) with detailed structural formulas, defining core substituents, stereochemistry, and specific functional groups.
    For instance: "A compound having the structure of Formula I, wherein R1-R4 are [specific groups]."

  • Dependent Claims:
    Narrow the scope by specifying particular substituents, salts, or derivatives that enhance pharmacokinetics or stability.

  • Method Claims:
    Describe processes for synthesizing the compounds or administering them to treat certain conditions.

  • Formulation Claims:
    Cover pharmaceutical compositions incorporating the compound(s) with excipients, delivery systems, or dosage forms.


Claims Analysis: Depth and Breadth

The independent claims are crafted to strike a balance between broad protection—covering an entire class of compounds—and specificity that withstands patentability challenges. Features of particular interest include:

  • Structural Limitations:
    Precise substitutions on core scaffolds, e.g., heterocyclic rings with particular side chains, serve to delineate the scope.

  • Functional Limitations:
    Claims may specify biological activities such as kinase inhibition, receptor binding profiles, or metabolic stability, which reinforce the novelty.

  • Use Limitations:
    Claims may claim the use of compounds for specific diseases, providing strategic coverage for therapeutic applications.

While the broadening of claims introduces a risk of pre-existing art invalidation, the patent’s detailed structural features likely defend against such challenges, creating a robust protective fence around the core invention.


Patent Landscape Context

Comparison with Prior Art

The landscape surrounding the ‘’220 Patent’ reflects a dynamic field characterized by:

  • Prior Art Patents:
    Several prior art references—[e.g., US Patent Nos. 8,xxx,xxx; 9,xxx,xxx]—disclose related chemical classes or therapeutic targets, but often with narrower scopes or different substituents.

  • Evolution of Chemical Space:
    The ‘’220 Patent’ advances beyond earlier patents by introducing [e.g., a novel substitution pattern or a unique pharmacophore], thus filling gaps in established chemical or therapeutic territories.

Fostered Innovation

The patent likely complements other intellectual property assets, such as:

  • Method of synthesis patents
  • Combination therapy patents
  • Delivery system patents

Together, these create a dense patent thicket that puedes defend against competition while licensing revenue through strategic alliances.

Legal and Market Implications

The scope provides competitive advantages by:

  • Deterring generic manufacturers
  • Facilitating licensing negotiations
  • Supporting regulatory exclusivity periods

At the same time, inventors must monitor potential patent challenges from third parties alleging novelty or inventive step issues, especially given the rapidly evolving chemical oncology landscape.


Strategic Considerations for Stakeholders

  • For Patent Holders:
    Maintain patent validity by ensuring claims are sufficiently supported by inventive steps and avoid overlapping with prior art.

  • For Competitors:
    Identify potential design-arounds around the core structural claims or seek to challenge the patent's validity through art-based invalidation proceedings.

  • For Licensees and Collaborators:
    Leverage patent coverage to secure market exclusivity and justify R&D investments; ensure freedom to operate concerning the claims.


Conclusion

The ‘’220 Patent’ exemplifies a carefully drafted hybrid of broad and specific claims aimed at securing a substantial niche within the pharmaceutical patent landscape. Its scope extends to novel compounds with potential therapeutic relevance, fortified by method and formulation claims. Its positioning within the patent landscape reflects a strategic effort to carve out and defend a market segment amidst a competitive presence of prior art.


Key Takeaways

  • The patent’s core claims focus on a specific chemical class linked to a therapeutic application, with detailed structural features safeguarding against invalidation.
  • Its breadth allows for extension into various formulations and methods, expanding potential commercial coverage.
  • The patent landscape indicates a continuum of prior art, but ‘’220 Patent’s’ specific structural features likely reinforce its novelty.
  • Maintaining vigilant monitoring for potential challenges and potential licensing opportunities is critical to maximize its strategic value.
  • In light of rapidly progressing pharmaceutical innovation, continuous patent portfolio expansion and updates are necessary to sustain competitive advantage.

FAQs

1. What is the primary innovation protected by the ‘’220 Patent’?
The patent protects a specific chemical structure, likely a novel pharmaceutical compound with defined substituents, along with its therapeutic use in treating specific diseases such as [disease].

2. How broad are the claims within the ‘’220 Patent’?
The claims strike a balance—they are broad enough to cover a class of related compounds but specific enough to avoid prior art. Often, the independent claims cover core chemical scaffolds, with dependent claims narrowing specificity.

3. Can the ‘’220 Patent’ be challenged for validity?
Yes. Challenges may arise from prior art references, especially if similar compounds or methods are disclosed elsewhere. However, the patent’s detailed structural claims and inventive distinctions bolster its defensibility.

4. How does this patent fit into the overall drug development landscape?
It offers exclusivity over specific therapeutic compounds, supporting clinical development and commercialization strategies, and can serve as a foundation for licensing or partnering deals.

5. What should stakeholders consider regarding potential patent conflicts?
Stakeholders must review existing patents for overlapping claims, monitor patent expiry timelines, and evaluate potential infringement risks through patent clearance searches.


References

[1] U.S. Patent No. 9,517,220, “Title of Patent,” filed [Filing Date], issued [Issue Date], assignee: [Name].
[2] Prior art references include: [List of relevant patents and literature].
[3] Market reports and pharmaceutical patent analyses from [source, e.g., IQVIA, IPlytics].

More… ↓

⤷  Get Started Free


Drugs Protected by US Patent 9,517,220

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bausch And Lomb PROLENSA bromfenac sodium SOLUTION/DROPS;OPHTHALMIC 203168-001 Apr 5, 2013 AB RX Yes Yes 9,517,220 ⤷  Get Started Free TREATMENT OF POSTOPERATIVE INFLAMMATION AND REDUCTION OF OCULAR PAIN IN PATIENTS WHO HAVE UNDERGONE CATARACT SURGERY ⤷  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 9,517,220

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 2852995 ⤷  Get Started Free
European Patent Office 2765988 ⤷  Get Started Free
European Patent Office 4491170 ⤷  Get Started Free
Spain 2992712 ⤷  Get Started Free
Finland 2765988 ⤷  Get Started Free
Croatia P20241509 ⤷  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.