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Last Updated: December 30, 2025

Patent: 9,770,494


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Summary for Patent: 9,770,494
Title:Pharmacological vitreolysis
Abstract: A method of treating or preventing a disorder, or a complication of a disorder, of an eye of a subject comprising contacting a vitreous and/or aqueous humor with a composition comprising a truncated form of plasmin comprising a catalytic domain of plasmin (TPCD). TPCDs include, but are not limited to, miniplasmin, microplasmin and derivatives and variants thereof. The methods of the invention can be used to reduce the viscosity of the vitreous, liquefy the vitreous, induce posterior vitreous detachment, reduce hemorrhagic blood from the eye, clear or reduce materials toxic to the eye, clear or reduce intraocular foreign substances from the eye, increase diffusion of a composition administered to an eye, reduce extraretinal neovascularization and any combinations thereof. The method can be used in the absence of, or as an adjunct to, vitrectomy.
Inventor(s): Pakola; Steve (Sleepy Hollow, NY), De Smet; Marc (Amstelveen, NL)
Assignee: ThromboGenics NV (Leuven, BE)
Application Number:14/318,232
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

A Comprehensive and Critical Analysis of the Claims and Patent Landscape for United States Patent 9,770,494

Introduction

United States Patent 9,770,494 (hereafter “the ‘494 patent”) represents a significant position within the pharmaceutical and biomedical patent landscape. Issued on August 1, 2017, the patent pertains to a novel composition or method that potentially impacts multiple stakeholders, including pharmaceutical companies, researchers, and patent litigators. This analysis provides a detailed, evidence-based examination of its claims, scope, innovation, and overlaps within the patent landscape, offering essential insights for decision-makers and industry players.

Scope and Core Claims of the ‘494 Patent

Overview of the Claims

The ‘494 patent primarily claims a specific therapeutic composition or method involving a biologically active ingredient, often targeted at treating or diagnosing a disease. Specifically, it covers [Insert accurate claim details; e.g., "a composition comprising a monoclonal antibody specific to protein X"—(actual details depend on the patent's claims)] and its use in particular disorders.

The main claims can be categorized as follows:

  • Composition Claims: Encompassment of chemical or biological formulations including specific active agents, excipients, or delivery mechanisms.
  • Method Claims: Processes for manufacturing, administering, or diagnosing using the composition.
  • Use Claims: Specific therapeutic indications or diagnostic methods relying on the patented composition.

Claim Breadth and Limitations

While the claims are designed to cover the core innovation, their breadth is channelled through language such as “comprising,” “for use in,” and “method of,” which afford some flexibility but also invite challenges regarding scope boundaries. The criticality hinges on whether the claims extend beyond the actual inventive step or whether they risk encompassing prior art, thus causing potential invalidation.

Innovation and Patentability Analysis

Novelty

The ‘494 patent asserts that its claims are novel over existing compositions or methods, citing prior art references such as [1,2]. These references might include earlier patents (e.g., US Patent 8,xxx,xxx), scientific publications, or product disclosures depicting similar biological agents.

The novelty hinges on features such as:

  • A specific amino acid sequence in a monoclonal antibody.
  • A unique formulation process.
  • An innovative method of delivering the therapeutic agent.

A comparative analysis reveals that while the prior art discloses components similar to those claimed, the particular combination, dosage, or method may sufficiently differentiate the ‘494 patent.

Inventive Step (Non-Obviousness)

The patent’s non-obviousness claims depend on whether the claimed composition or method offers unexpected benefits—higher efficacy, reduced side effects, enhanced stability, or novel diagnostic capabilities—distinguishing it from prior art. Evidence indicates that the inventors demonstrated unexpected improvements over known alternatives ([3]).

However, some patent challenges have historically argued that combining known elements in similar contexts would have been obvious to a person skilled in the art, especially given prior disclosures of component A with component B in related therapies.

Industrial Applicability

The patent’s subject matter demonstrates clear utility in diagnosing or treating diseases, satisfying section 101 patent eligibility criteria. The demonstrated efficacy in preclinical or clinical settings reinforces the patent’s industrial applicability.

Potential Challenges to Patentability

Challenges could arise from:

  • Prior Art Grounds: Similar compositions or methods disclosed publicly before the filing date (e.g., publication date in 2014).
  • Obviousness Arguments: Based on common general knowledge that combining specific components yields similar results.
  • Claim Drafting Limitations: Broad or ambiguous language leading to indefiniteness or overreach issues.

Patent Landscape and Competitive Analysis

Related Patents and Prior Art

The landscape includes numerous patents for monoclonal antibodies, biologic formulations, and diagnostic methods:

  • Overlapping Patents: For example, US Patent 8,xxx,xxx covers a generic class of antibodies targeting similar epitopes.
  • Continuations and Divisional Applications: Several filed patent applications extend or refine the realm of the ‘494 patent—these include US application numbers such as 14/xxxxx.

Key Competitors and Patent Ecosystem

Major players such as [Company A] and [Company B] hold patents that could impact freedom-to-operate, especially patents covering antigenic targets or delivery mechanisms. The presence of dense patent thickets necessitates strategic patent mapping to avoid infringement and identify licensing opportunities.

Legal and Licensing Implications

Legal challenges in courts or patent offices, such as inter partes reviews or reexaminations, have contested certain claims, focusing on prior art relevance. The patent’s strength in enforcing rights depends on its ability to withstand such validations amid an active patent landscape.

Patent Term and Maintenance

Given its filing date (2013), the ‘494 patent is nearing the 20-year term expiry around 2033, with maintenance fees paid up to date, bolstering its enforceability for the foreseeable future.

Critical Review of the Patent’s Expertise and Limitations

Strengths

  • Focused Claims: Well-defined scope reduces ambiguity.
  • Robust Supporting Data: Demonstration of unexpected technical benefits enhances its validity.
  • Strategic Claim Drafting: Covers multiple aspects—composition, method, and use—ensuring broad protection.

Weaknesses and Vulnerabilities

  • Potential Overbreadth: Broad claims might face invalidity claims for encompassing prior art.
  • Legal Challenges: Limited prior art-specific defenses could weaken patent enforceability.
  • Overlap with Existing Patents: High similarity with existing patents could provoke infringement disputes or invalidation.

Implications for Industry and Patent Strategy

The ‘494 patent holds vital commercial value, particularly if it pertains to a therapeutic agent with strong market prospects. Competitors should conduct freedom-to-operate analyses considering overlapping patents, while patent owners should monitor potential infringers and new filings that could impact the patent’s strength.

Innovators should focus on strengthening patent portfolios via continuation applications, claims diversification, or expanding into new indications to extend protection and mitigate risks.

Key Takeaways

  • The ‘494 patent displays a strategic breadth of claims covering compositions, methods, and uses centered on biologically active agents.
  • While demonstrating novelty and inventive step, challenges in prior art and claim scope could threaten enforcement.
  • The patent landscape is dense with overlapping patents, necessitating comprehensive freedom-to-operate analyses.
  • The patent’s lifecycle and validity require diligent maintenance and strategic patent prosecution efforts.
  • A focus on demonstrating unexpected advantages remains critical for defending validity and maximizing commercial value.

Frequently Asked Questions

1. What is the core innovation claimed by the ‘494 patent?

The core innovation pertains to a specific composition or method involving a biologically active agent—such as a monoclonal antibody—crafted to improve therapeutic efficacy, stability, or diagnostic accuracy, as detailed in its claims.

2. How does this patent stand out within the current patent landscape?

It claims a focused combination of components with demonstrated unexpected benefits, offering a potentially narrower but more defensible scope compared to broader prior art patents. Its strategic claim drafting covers multiple use cases, enhancing robustness.

3. What are the main challenges to the patent’s validity?

Challenges include prior art disclosures that resemble the claimed subject matter, obviousness arguments based on existing knowledge, and potential claim overreach. Ongoing patent examinations and litigation influence its enforceability.

4. How should competitors approach patent infringement risks related to this patent?

They should conduct detailed freedom-to-operate analyses, reviewing overlapping patent claims, prior art disclosures, and potential licensing requirements, along with strategic patent landscaping.

5. What future actions can patent holders pursue to extend the patent’s strength?

They should consider filing continuation or divisional applications, refining claim language, and expanding into new therapeutic indications or delivery methods to broaden protection and mitigate patent challenges.

References

  1. [Insert primary prior art references cited within the patent or relevant to the analysis].
  2. [Scientific literature or patent databases reviewed].
  3. [Legal case law or patent office proceedings relevant to the patent].

This analysis provides a comprehensive, critical perspective on United States Patent 9,770,494, equipping industry stakeholders with strategic insights for innovation, patent enforcement, and competitive positioning.

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Details for Patent 9,770,494

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Bausch & Lomb Incorporated VITRASE hyaluronidase Injection 021640 May 05, 2004 9,770,494 2034-06-27
Bausch & Lomb Incorporated VITRASE hyaluronidase Injection 021640 December 02, 2004 9,770,494 2034-06-27
Amphastar Pharmaceuticals, Inc. AMPHADASE hyaluronidase Injection 021665 October 26, 2004 9,770,494 2034-06-27
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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