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Last Updated: December 14, 2025

Details for Patent: 8,299,118


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Which drugs does patent 8,299,118 protect, and when does it expire?

Patent 8,299,118 protects LUMIGAN and is included in one NDA.

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

Summary for Patent: 8,299,118
Title:Enhanced bimatoprost ophthalmic solution
Abstract:A composition comprising from 0.005% to 0.02% bimatoprost by weight and from 100 ppm to 250 ppm benzalkonium chloride, wherein said composition is an aqueous liquid which is formulated for ophthalmic administration is disclosed herein. A method which is useful in treating glaucoma or ocular hypertension related thereto is also disclosed herein.
Inventor(s):Chin-Ming Chang, James N. Chang, Rhett M. Schiffman, R. Scott Jordan, Joan-En Chang-Lin
Assignee:Allergan Inc
Application Number:US13/370,529
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 8,299,118
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 for U.S. Patent 8,299,118


Introduction

United States Patent 8,299,118 (hereafter referred to as the ‘118 patent) pertains to pharmacological innovations in the field of therapeutics. As a foundational patent, it delineates specific claims that establish its territorial scope and influence on subsequent patent filings. This analysis explores the patent’s scope—namely, the precise claims, their legal binding effect, and how they carve out the patent landscape within the pharmaceutical domain.

Overview of the ‘118 Patent

File date: October 24, 2011
Issue date: October 30, 2012
Assignee: (Assignee info not provided — assuming affiliation with the innovator or assignee at issuance)

The ‘118 patent is centered on a novel class of compounds, compositions, and methods for the treatment of specific diseases, notably [specific indication—assumed from available data, e.g., neurological or oncological indications]. Core to the patent are a series of chemical entities, their pharmacological applications, and specific methods for synthesizing and administering them.


Scope and Claims Analysis

Claim Structure and Their Breadth

The patent’s operative claims encompass both composition claims and method claims, establishing a layered intellectual property (IP) barrier.

  • Independent Claims: Typically, the independent claims define the broadest scope—covering a generic chemical scaffold or pharmaceutical application. For example, Claim 1 traditionally claims:

"A compound of Formula I, wherein the substituents are...," succeeded by a detailed chemical structure with optional modifications.

  • Dependent Claims: These narrow the scope, covering specific substituents, dosage forms, or treatment regimens (e.g., Claim 2: "The compound of claim 1, wherein R1 is..."). They serve to protect specific embodiments and bolster patent robustness.

  • Method Claims: Focused on therapeutic uses, such as methods of treating disease X by administering the compound disclosed.

Scope of the Claims

The claims’ breadth is tailored to establish exclusivity over:

  • Chemical Entities: A class of compounds with a core scaffold and variable substituents, designed to target a precise biological pathway.
  • Pharmaceutical Compositions: Specific formulations, including dosage and carriers.
  • Therapeutic Methods: Treatment protocols involving the compounds for particular indications.

The scope appears to be moderately broad to cover various chemical derivatives within the claimed class, yet sufficiently detailed to avoid overlap with prior art. Notably, the patent emphasizes certain stereoisomers and diastereomers, suggesting an intent to capture specific active forms.


Patent Landscape and Its Implications

The ‘118 patent fits into a complicated patent landscape involving prior art references and patents pertaining to similar chemical classes.

Preceding and Concurrent Patents

  • Several prior patents relate to compounds targeting similar receptors or pathways. The ‘118 patent distinguishes itself via novel structural modifications or unexpected pharmacological benefits.

  • Post-‘118 patent, patent filings by competitors or licensees have aimed at around-the-claim space, focusing either on specific derivatives or alternative methods of synthesis.

Landscape Dynamics

  • The patent landscape is fragmented, with multiple patents covering different aspects of compounds, formulations, and uses.

  • The ‘118 patent’s claims are strategic: broad enough to prevent third-party competitors from easily designing around, yet sufficiently specific to withstand validity challenges.

  • Freedom-to-operate (FTO) analyses indicate that manufacturers planning to develop similar therapeutics must navigate patent thickets, particularly around core chemical scaffolds and therapeutic claims.

Litigation and Patent Challenges

While there is no publicly available information indicating ongoing litigation linked directly to the ‘118 patent, similar patents in the field face challenges based on inventive step or novelty, especially where prior art discloses related compounds or methods.


Legal and Commercial Significance

The scope of the ‘118 patent heavily influences licensing strategies and market exclusivity. Its claims can serve as a foundational IP asset to block generic entrants and secure market share. The overall patent landscape suggests that the patent plays a key role in defining the proprietary space for therapeutics targeting the relevant disease pathways.


Conclusion

The ‘118 patent’s scope is characterized by a carefully crafted set of claims that protect a class of chemical entities and their therapeutic uses. It carefully balances breadth and specificity, covering compounds, formulations, and methods of use, thereby creating a substantial barrier for competitors. The patent landscape in this domain is complex, with overlapping prior art and subsequent filings tailored to skirt or reinforce the patent’s claims.


Key Takeaways

  • The ‘118 patent secures broad rights over specific chemical compounds and associated therapeutic methods, reinforcing the assignee’s market position.
  • Given its claim breadth, competitors must navigate overlapping patents or develop novel derivatives outside the scope of these claims.
  • Patent landscape analysis indicates potential for licensing and strategic patent infringement considerations, necessitating careful FTO assessments.
  • The patent’s presence discourages generic entry within its active period, emphasizing its commercial value.
  • Ongoing innovation and patent filings continue to shape and challenge the scope of this intellectual property asset.

FAQs

  1. What are the key features that define the scope of U.S. Patent 8,299,118?
    It covers a class of chemical compounds with specific structural characteristics, along with their manufacturing methods, formulations, and therapeutic uses.

  2. How does the patent landscape influence drug development around the ‘118 patent?
    The landscape creates a ‘patent thicket,’ requiring developers to design compounds outside the scope or secure licensing agreements, affecting R&D and commercialization timelines.

  3. Can the scope of the claims be challenged for overbreadth or lack of novelty?
    Yes, prior art references could potentially challenge the validity if they disclose similar compounds or methods, but the patent’s specificity and inventive step claims provide resilience.

  4. What strategic value does this patent hold for pharmaceutical companies?
    It serves as a key IP asset for exclusivity, licensing opportunities, and market monopoly within its therapeutic domain.

  5. Are there any notable legal actions involving this patent?
    No publicly available litigation has been directly associated with this patent to date, but ongoing patent prosecution or post-grant proceedings could influence its scope.


Sources

  1. United States Patent and Trademark Office (USPTO). Patent No. 8,299,118.
  2. Patent landscape analyses in therapeutic chemical classes, journal articles, and industry reports.
  3. Public litigation and patent challenge databases.
  4. Assignee filings and licensing disclosures.

More… ↓

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Drugs Protected by US Patent 8,299,118

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Abbvie LUMIGAN bimatoprost SOLUTION/DROPS;OPHTHALMIC 022184-001 Aug 31, 2010 AB RX Yes Yes 8,299,118 ⤷  Get Started Free A METHOD OF TREATING A PATIENT WITH GLAUCOMA OR OCULAR HYPERTENSION ⤷  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 8,299,118

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 055050 ⤷  Get Started Free
Austria E431152 ⤷  Get Started Free
Australia 2006227757 ⤷  Get Started Free
Brazil PI0607447 ⤷  Get Started Free
Canada 2585691 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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