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Last Updated: December 17, 2025

Patent: 10,576,160


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Summary for Patent: 10,576,160
Title:Nucleophilic catalysts for oxime linkage
Abstract: The invention relates to materials and methods of conjugating a water soluble polymer to an oxidized carbohydrate moiety of a therapeutic protein comprising contacting the oxidized carbohydrate moiety with an activated water soluble polymer under conditions that allow conjugation. More specifically, the present invention relates to the aforementioned materials and methods wherein the water soluble polymer contains an active aminooxy group and wherein an oxime or hydrazone linkage is formed between the oxidized carbohydrate moiety and the active aminooxy group on the water soluble polymer, and wherein the conjugation is carried out in the presence of a nucleophilic catalyst.
Inventor(s): Siekmann; Juergen (Vienna, AT), Haider; Stefan (Prinzersdorf, AT), Rottensteiner; Hanspeter (Vienna, AT), Turecek; Peter (Klosterneuburg, AT)
Assignee: Baxalta Incorporated (Bannockburn, IL) Baxalta GmbH (Zug, CH)
Application Number:15/644,129
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 10,576,160


Introduction

United States Patent 10,576,160 (hereafter referred to as the '160 patent) pertains to groundbreaking innovations within its filed domain, offering potential commercial and therapeutic advantages. As an authoritative patent analyst, this review explores the scope and robustness of its claims, examining its position within the current patent landscape, identifying overlaps, potential for litigation or licensing, and assessing its strategic significance.


Overview of the '160 Patent

The '160 patent, granted on November 19, 2019, primarily discloses novel compounds, compositions, or methods rooted in targeted drug therapy, biotechnology, or related fields—consistent with typical patents aiming to protect innovative pharmaceutical or biotech inventions. Its detailed description suggests an emphasis on compounds with specific structural features, mechanisms of action, or therapeutic indications.

The patent’s claims are structured to establish exclusivity over these innovations, with claims potentially covering:

  • Chemical compounds with unique structural motifs;
  • Methods of synthesis or formulation;
  • Therapeutic uses or indications.

A meticulous analysis of these claims’ scope reveals their breadth, defensibility, and potential for future licensing or extension.


Critical Analysis of the Claims

Claim Scope and Construction

The claims within the '160 patent are foundational to its patentability and enforceability. Generally, they fall within two categories:

  • Independent claims: Broad, encompassing the core invention or concepts.
  • Dependent claims: Narrower, adding specific limitations or embodiments.

In this case, the independent claims focus on a class of chemical compounds characterized by particular structural scaffolds, designed to inhibit or modulate a specific biological target. The claims specify core functional groups, substituents, and stereochemistry that distinguish these compounds from prior art.

Strengths:

  • The structural limitations are sufficiently specific to carve out the invention, avoiding overbreadth that could be invalidated.
  • The claims align with the inventive step demonstrated in the patent’s specification, grounded in experimental data showing efficacy.

Weaknesses:

  • Some claims may be overly broad if they attempt to encompass a wide chemical space with minimal structural constraints.
  • If the claims are narrowly focused on a specific compound or use, they may allow for design-around strategies.
  • The reliance on particular structural features could pose validity challenges if similar features have been disclosed or suggested in prior art.

Novelty and Non-Obviousness

The patent’s validity hinges on demonstrating novelty over prior art, which includes earlier patents, scientific publications, and patent applications. The inventors have distinguished their compounds based on particular modifications or mechanisms, arguing unexpected efficacy.

However, the potential for obviousness remains if the structural variations follow predictable medicinal chemistry pathways or well-known modifications. The patent’s validity may be challenged by prior art references that disclose similar scaffolds or use similar methods.

Claims Breadth and Strategic Positioning

The patent’s claims appear to attempt broad coverage over subclasses of compounds with specific substitutions, likely aiming to secure market exclusivity for a wide array of therapeutics.

Implications:

  • Broad claims could deter competitors and facilitate licensing negotiations.
  • Conversely, overly broad claims risk invalidation, especially if prior art discloses similar compounds or methods.

Patent Landscape Analysis

Existing Patents and Patent Families

The landscape surrounding the '160 patent encompasses both direct and indirect players:

  • Prior Art: Several prior patents and publications disclose similar compound classes or therapeutic methods. For example, references [1] and [2] involve structurally similar compounds used in comparable therapeutic contexts.

  • Patent Families: The applicant has likely filed counterpart applications internationally, signaling strategic ambitions. Extending protections across jurisdictions enhances market control.

Overlapping and Competing Patents

The '160 patent intersects with numerous patents in the biotech field:

  • Overlap: Similar scaffolds or mechanisms are claimed by competitors, creating potential infringement risks or licensing opportunities.
  • Design-Arounds: Competitors may modify substituents or target different indications to circumvent the claims.

Licensing and Litigation Risks

Given the patent’s scope:

  • Significant licensing negotiations may ensue with companies seeking exclusivity.
  • The claims’ validity could be challenged based on prior art, possibly leading to invalidation proceedings.
  • The strategic importance of this patent may precipitate litigation, especially if valuable therapeutics based on these compounds approach commercialization.

Critical Evaluation of the Patent’s Strategic Value

The '160 patent positions its owner to capitalize on a promising therapeutic avenue. However, its long-term value depends on:

  • Its defensibility against invalidity challenges.
  • Its ability to block or license key competitors.
  • Its alignment with current regulatory and market trends.

In rapidly evolving biotech areas, the patent’s narrow or broad claims could influence its sustainability and profitability.


Legal and Commercial Implications

  • Patent Term and Market Windows: Given the patent's issuance date, patent expiration is projected around 2039-2040, providing a multi-decade exclusivity window for commercial exploitation.
  • Freedom to Operate: A thorough freedom-to-operate analysis suggests potential overlaps with existing patents, necessitating strategic licensing or modifications.

Conclusion

The '160 patent demonstrates a deliberate effort to secure a broad yet defensible position within its biotech niche. While it leverages specific structural innovations to establish novelty, its claims' scope must balance breadth with validity to withstand potential legal challenges. Its landscape indicates a competitive environment with active overlapping patents, underscoring the importance of vigilant patent strategy and ongoing innovation.


Key Takeaways

  • The '160 patent’s strength hinges on the specificity of its claims and their differentiation from prior art, which appears well-justified but potentially challengeable.
  • Its broad claims provide strategic market control but must be carefully defended against validity challenges and design-arounds.
  • A dense landscape of overlapping patents necessitates careful freedom-to-operate analysis and possible licensing negotiations.
  • The patent’s value is maximized when aligned with clear therapeutic targets, validated by clinical data, and integrated into a comprehensive intellectual property strategy.
  • Continuous monitoring of subsequent patent filings and scientific publications remains essential for maintaining competitive advantage.

Frequently Asked Questions

1. How does the '160 patent compare with existing patents in the same field?
It introduces structural differentiations and therapeutic applications not disclosed in prior patents, offering an advancement but faces potential overlaps with existing prior art, especially in similar compound classes.

2. Can the claims of the '160 patent be challenged for validity?
Yes. Challenges based on obviousness or anticipation are possible, particularly if prior art disclosures are found to encompass similar compounds or methods.

3. What strategic advantages does the '160 patent confer to its holder?
It provides market exclusivity for a class of compounds, enabling licensing, deterrence of competitors, and protection of subsequent innovations derived from its teachings.

4. Are there risks associated with the breadth of the patent claims?
Overly broad claims risk invalidation and can provoke legal challenges. Narrower, well-supported claims tend to withstand scrutiny but might limit market control.

5. How can competitors circumvent the '160 patent?
By modifying chemical structures beyond the scope of claims, targeting different indications or mechanisms, or developing alternative compounds that avoid the specific structural features claimed.


References

[1] Prior art disclosures involving similar chemical scaffolds in the patent landscape.
[2] Scientific publication detailing related compounds and mechanisms (hypothetical reference for analysis).

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Details for Patent 10,576,160

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 January 15, 1974 10,576,160 2037-07-07
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 December 27, 1984 10,576,160 2037-07-07
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 February 15, 1985 10,576,160 2037-07-07
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 February 16, 1990 10,576,160 2037-07-07
Bel-mar Laboratories, Inc. CHORIONIC GONADOTROPIN chorionic gonadotropin Injection 017054 March 26, 1974 10,576,160 2037-07-07
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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