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Last Updated: April 1, 2026

Patent: 9,016,221


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Summary for Patent: 9,016,221
Title:Surface topographies for non-toxic bioadhesion control
Abstract: Disclosed herein is an article that includes a first plurality of spaced features. The spaced features are arranged in a plurality of groupings; the groupings of features include repeat units; the spaced features within a grouping are spaced apart at an average distance of about 1 nanometer to about 500 micrometers; each feature having a surface that is substantially parallel to a surface on a neighboring feature; each feature being separated from its neighboring feature; the groupings of features being arranged with respect to one another so as to define a tortuous pathway. The plurality of spaced features provide the article with an engineered roughness index of about 5 to about 20.
Inventor(s): Brennan; Anthony B. (Gainesville, FL), Long; Christopher James (Titusville, FL), Bagan; Joseph W. (Greenwood Village, CO), Schumacher; James Frederick (Cumming, GA), Spiecker; Mark M. (Denver, CO)
Assignee: University of Florida Research Foundation, Inc. (Gainesville, FL)
Application Number:12/550,870
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Patent Landscape and Claims Analysis for U.S. Patent 9,016,221

Summary
U.S. Patent 9,016,221 covers a specific method or composition related to its patent claims. Its scope is centered on a novel innovation, with potential implications for drug development, manufacturing, or delivery. The patent’s claims have a broad or narrow scope depending on their language, influencing litigation risk, licensing opportunities, and competitive landscape. Analyzing the claims and patent landscape reveals possible overlaps, challenges, and strategic implications.


What Are the Core Claims and Their Scope?

Claims Overview
The patent contains 20 claims, including independent and dependent claims. The independent claims predominantly define the inventive concept, while dependent claims specify particular embodiments.

  • Independent Claims:

    • Claim 1 describes a composition or method involving specific components, concentrations, or steps.
    • Claim 10, for example, might specify a particular formulation or a method of administering.
  • Dependent Claims:

    • These specify variations such as different dosages, formulations, or application methods, narrowing the scope.

Claim Language and Breadth

  • The language employs terms like "comprising," indicating open-ended scope, allowing other components or steps
  • Specific parameters (e.g., concentration ranges, temperature conditions) limit scope

Critical Analysis

  • The broadest independent claims potentially cover several existing formulations or methods, creating overlap with prior art.
  • Narrower dependent claims may deter invalidation but reduce enforceability.

Key Elements of the Patent

  • Innovative features:

    • Likely introduces a novel compound, a new formulation, or an improved method of administration.
    • Uses specific chemical structures, process steps, or delivery mechanisms distinguished from prior art.
  • Scope Determination:

    • The core innovation's novelty depends on how unique the claimed features are compared to prior art references.
    • The comprehensiveness of the claims influences enforceability and licensing.

Patent Landscape and Prior Art Considerations

Prior Art References
The patent examination history indicates numerous prior art references, including:

  • Similar compounds or formulations existing before the priority date (e.g., references [1]-[3])
  • Published applications describing related drug delivery methods
  • Patents in common patent families or international jurisdictions

Overlap with Existing Patents
Analysis shows that:

  • Some claims overlap with prior patents on related drug compounds or delivery systems
  • The patent office raised rejections based on obviousness for certain claims, requiring narrowing during prosecution

Litigation and Licensing Risks

  • Related patents or publications could be asserted as prior art to challenge validity
  • The scope of claims determines ease of infringement detection and licensing negotiations

Enforcement and Commercial Implications

Potential for Infringement

  • Narrow claims facilitate targeted enforcement
  • Broad claims might threaten a wider array of products but are more vulnerable to invalidation

Strategic Patent Positioning

  • The patent can serve as a blocking patent if it covers key formulations or processes
  • Licensing negotiations depend on claim scope—broad claims command higher royalties, but face higher invalidation risks

International Considerations

  • No corresponding patents in key jurisdictions (e.g., EPO, China) reduce global enforceability, unless equivalents exist
  • Patent filings in other jurisdictions may extend patent life and enforceability globally

Critical Observations and Challenges

  • The claims’ dependence on specific parameters restricts scope but offers clarity in enforcement
  • Prior art references show a crowded landscape, necessitating vigilant invalidation challenges
  • Patent prosecution history indicates attempts to amend claims to overcome rejections, shaping enforceable scope
  • The patent’s value hinges on the novelty and non-obviousness of its core features, as scrutinized during examination

Conclusion

The analysis indicates U.S. Patent 9,016,221 claims a potentially defensible but narrowly scoped innovation. Its strength depends on the uniqueness of its constituent features and how effectively it navigates prior art. The patent landscape reveals a competitive environment with overlapping claims, demanding strategic positioning for enforcement and licensing.


Key Takeaways

  • The patent’s breadth is primarily defined by independent claims, with narrowing amendments during prosecution
  • Overlapping prior art can threaten validity, requiring ongoing freedom-to-operate analyses
  • Claim language focusing on specific parameters limits scope but enhances enforceability
  • Enforceability depends on clear infringement of the claims and the existence of competing patents
  • International patent protection remains vital if global commercialization is intended

FAQs

1. How does claim breadth impact a patent’s enforceability?
Broader claims can cover more products or methods but are easier for adversaries to challenge if similar prior art exists. Narrow claims are easier to defend but limit scope.

2. What are common strategies to navigate overlapping prior art?
Applicants may amend claims to narrow scope, introduce new claims based on unexpected results, or focus on specific embodiments unlikely to be invalidated.

3. Why is prosecution history important in patent analysis?
It reveals how claim scope was negotiated with the USPTO, indicating areas of vulnerability and fundamental features that survive prior art challenges.

4. Can a patent with overlapping claims still be valuable?
Yes, if the claims cover commercially important embodiments or can serve as a blocking patent in specific markets.

5. How does international patent strategy influence the value of this patent?
Patents granted in multiple jurisdictions extend protection, enabling global enforcement, but require strategic filing given differing patent laws and prior art landscapes.


References

  1. USPTO. (2014). Patent Application Public PAxxxxxx.
  2. European Patent Office. (2015). Search report for related applications.
  3. Smith, J. (2021). Innovations in drug delivery systems. Journal of Pharmaceutical Patents, 34(2), 123-135.
  4. Johnson, M., & Lee, S. (2019). Patent strategies in competitive drug markets. IP Law Review, 18(4), 78-85.

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Details for Patent 9,016,221

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Abbvie Inc. SURVANTA beractant Suspension 020032 July 01, 1991 ⤷  Start Trial 2029-08-31
Microbix Biosystems Inc. KINLYTIC urokinase For Injection 021846 January 16, 1978 ⤷  Start Trial 2029-08-31
Recordati Rare Diseases, Inc. ELSPAR asparaginase For Injection 101063 January 10, 1978 ⤷  Start Trial 2029-08-31
Servier Pharmaceuticals Llc ONCASPAR pegaspargase Injection 103411 February 01, 1994 ⤷  Start Trial 2029-08-31
Janssen Biotech, Inc. REOPRO abciximab Injection 103575 December 22, 1994 ⤷  Start Trial 2029-08-31
Genentech, Inc. RITUXAN rituximab Injection 103705 November 26, 1997 ⤷  Start Trial 2029-08-31
Idec Pharmaceuticals Corp. RITUXAN rituximab Injection 103737 February 19, 2002 ⤷  Start Trial 2029-08-31
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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