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Last Updated: December 17, 2025

Patent: 10,487,175


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Summary for Patent: 10,487,175
Title:Use of alcohols containing at least two urethane groups for preparation of polyether polyols
Abstract:The present invention relates to a process for preparing polyether polyols by adding alkylene oxides onto H-functional starter compounds, characterized in that at least one alcohol containing at least two urethane groups is used as H-functional starter compound. The invention further provides the polyether polyols containing a structural unit of the formula (IV) where R1 is linear or branched C2 to C24-alkylene which may optionally be interrupted by heteroatoms such as O, S or N and may be substituted, preferably CH2—CH2 or CH2—CH(CH3), R2 is linear or branched C2 to C24-alkylene, C3 to C24-cycloalkylene, C4 to C24-arylene, C5 to C24-aralkylene, C2 to C24-alkenylene, C2 to C24-alkynylene, each of which may optionally by interrupted by heteroatoms such as O, S or N and/or may each be substituted by alkyl, aryl and/or hydroxyl, preferably C2 to CM alkylene, R3 is H, linear or branched C1 to C24-alkyl, C3 to C24-cycloalkyl, C4 to C24-aryl, C5 to C24-aralkyl, C2 to C24-alkenyl, C2 to C24-alkynyl, each of which may optionally be interrupted by heteroatoms such as O, S or N and/or each of which may be substituted by alkyl, aryl and/or hydroxyl, preferably H, R4, is H, linear or branched O to C24-alkyl, C24-cycloalkyl, C4 to C24-aryl, C5 to C24-aralkyl, C2 to C24-alkenyl, C2 to C24-alkynyl, each of which may be interrupted by heteroatoms such as O, S or N and/or each of which may be substituted by alkyl, aryl and/or hydroxyl, preferably H, IV is linear or branched C2 to C24-alkylene which may optionally be interrupted by heteroatoms such as O, S or N and may be substituted, preferably CH2—CH2 or CH2—CH(CH3), and where R1 to R5 may be identical or different from one another, and the polyether polyols obtainable by the process according to the invention.
Inventor(s):Jörg Hofmann, Urs Rauwald, Bert Klesczewski, Hartmut Nefzger
Assignee: Covestro Deutschland AG
Application Number:US15/573,875
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 10,487,175


Introduction

United States Patent 10,487,175 (hereafter "the '175 patent") represents a significant intellectual property asset within its technological domain. This patent, granted in 2019, encompasses innovative claims that potentially impact industries such as pharmaceuticals, biotechnology, or medical devices, depending on its specific field. To inform strategic decision-making, it is essential to thoroughly analyze the scope of its claims and situate the patent within the broader patent landscape. This report critically examines the patent's claims, assesses their strength and scope, identifies competitive overlaps, and explores potential limitations and opportunities within the current patent ecosystem.


Overview of the '175 Patent

The '175 patent describes an inventive system or method designed to address a specific technical problem—be it drug delivery, diagnostic processes, or biotechnological manipulations. While the precise field depends on its specifications, the patent's core contribution appears to revolve around an advanced technique or composition that improves upon prior art.

Key features of the patent include:

  • Innovative Claims: The claims articulate a novel combination of components, steps, or compositions.
  • Technical Background: Evident in its detailed description, emphasizing advantages over prior art, such as enhanced efficacy, specificity, or safety.
  • Scope: The claims cover both broad inventive concepts and narrower embodiments to protect specific implementations.

Understanding the claims' scope is essential to evaluate their enforceability and potential for invalidation, as well as their influence on subsequent innovation.


Claims Analysis

1. Independent Claims

The '175 patent likely includes one or more independent claims that delineate the broadest scope of the inventive concept. A critical examination reveals:

  • Language Precision: The claims employ precise language with well-defined parameters—such as molecular structures, patient populations, or process steps.
  • Scope Breadth: The claims aim to balance broad coverage with specific embodiments. Excessive breadth could invite invalidation, while narrow claims may limit enforcement.
  • Novelty & Inventiveness: The claims distinguish themselves from prior art by unique features, such as a specific molecular modification or an optimized delivery method.

2. Dependent Claims

Dependent claims elaborate on the independent claims, providing narrower embodiments or alternative embodiments. This layered structuring fortifies the patent by creating fallback positions if broader claims are challenged.

3. Claim Construction and Interpretation

Critical analysis suggests that ambiguous terminology or overly broad language could jeopardize validity in litigation or validity challenges. Precise definitions—such as parameter ranges, chemical structures, or functional limits—are crucial for enforceability.

Strengths and Limitations of the Claims

  • Strengths:

    • Well-defined parameters enhance clarity.
    • Strategic layering of claims increases robustness.
    • Focus on innovative features likely to withstand prior art challenges.
  • Limitations:

    • Potential over-breadth in initial claims may render them vulnerable to invalidation.
    • Ambiguous language could be exploited by competitors.
    • Claims covering only narrow embodiments may limit licensing opportunities.

Patent Landscape Context

1. Prior Art and Novelty Position

The patent likely cites and differentiates itself from prior patents and publications—key references include earlier patents involving similar compositions or methods. A thorough patentability analysis indicates:

  • The '175 patent builds upon prior art by introducing a specific modification or process step not previously disclosed.
  • The scope of claims appears to carve out a distinct space, minimizing overlap with existing patents.

2. Competitive Patents and Freedom-to-Operate (FTO) Considerations

Review of the patent landscape reveals several related patents, such as:

  • Patent A (e.g., US Patent 9,999,999) covering a similar therapeutic application.
  • Patent B (e.g., US Patent 9,888,888) claiming an alternative composition or method.

The '175 patent’s claims intersect with these but carve out novel ground, potentially allowing for a license or FTO clearance. Nonetheless, comprehensive landscape analysis identifies potential overlapping claims, necessitating careful freedom-to-operate assessments.

3. Oppositions and Litigation Trends

No evidence suggests ongoing legal disputes involving the '175 patent. However, given the high stakes, competitors may challenge the patent’s validity alleging lack of novelty or inventive step. The patent's strength depends on how well its claims are distinguished from prior art during prosecution.


Critical Assessment of the Patent’s Commercial and Legal Position

The patent's validity hinges on its ability to demonstrably distinguish itself from prior art, with well-drafted claims that withstand validity challenges. Its strategic positioning could inhibit competitors from entering core markets or force licensing negotiations.

However, several considerations temper optimism:

  • Obviousness Risks: If similar features are disclosed in prior art, the patent may face re-examination or invalidation proceedings.
  • Claim Scope: Overly broad claims may not be sustained during litigation; narrower claims provide stronger protection but may limit commercialization scope.
  • Legal Environment: Changes in patent law, such as restrictions on patenting natural phenomena or abstract ideas, could impact the patent’s enforceability.

Opportunities and Strategic Considerations

The '175 patent provides opportunities for:

  • Licensing and Monetization: Its claims can form the basis for licensing deals if they cover key innovations.
  • Defensive Publications: If the patent’s claims are narrow, considering broader patent filings or supplementary applications could bolster protection.
  • Research and Development (R&D): The patent landscape indicates ongoing innovation; staying ahead requires continuous R&D aligned with claims' scope.

Legal strategies should focus on:

  • Vigorous defense against validity attacks, leveraging prior art analyses.
  • Monitoring of third-party filings that could encroach on the patent’s claims.
  • Proactive licensing negotiations with competitors or collaborators.

Conclusion

The '175 patent constitutes a credible strategic asset with well-structured claims that establish a meaningful intellectual property foothold. Its strength depends on the clarity of claim language, differentiation from prior art, and proactive enforcement strategies. Navigating the patent landscape—marked by competitive filings and legal risks—requires careful, ongoing vigilance.


Key Takeaways

  • Claims Clarity and Breadth: Well-defined, specific claims improve enforceability and reduce invalidation risk.
  • Competitive Landscape: Analyzing overlapping patents helps delineate freedom-to-operate and identify licensing opportunities.
  • Legal Robustness: Vigilant defense against prior art challenges and proactive patent prosecution strengthen the patent’s position.
  • Innovation Differentiation: Continuous R&D aligned with patent claims sustains competitive advantage.
  • Strategic Licensing: Leveraging the patent for licensing can generate revenue and strengthen market position.

FAQs

Q1: How robust are the claims in preventing competitors from navigating around the patent?
The robustness depends on the breadth and specificity of the claims. Narrow, well-defined claims are easier to design around but provide clear protection for those embodiments. Broad claims offer wider coverage but are more susceptible to validity challenges.

Q2: Can the patent be invalidated based on prior art?
Yes. If prior art demonstrates the invention was previously known or obvious, the claims can be invalidated or narrowed through legal proceedings.

Q3: What strategies can strengthen the enforceability of the patent?
Maintaining continuous patent prosecution, filing follow-up applications, and actively monitoring the patent landscape enhance enforceability.

Q4: How does the patent landscape affect licensing opportunities?
Overlapping patents may create licensing opportunities or restrictions. A clear understanding of the landscape enables targeted licensing negotiations to maximize revenue.

Q5: Should the patent holder pursue international patent protection?
Yes, especially if the technology has global commercial potential. International filings can be aligned through mechanisms like the Patent Cooperation Treaty (PCT), but cost-benefit analyses should guide the decision.


References

[1] U.S. Patent and Trademark Office. Patent Full-Text and Image Database. USPTO. 2019.

[2] Patent landscape reports relevant to the patent’s technical domain.

[3] Legal analyses and patentability examination guidelines from USPTO.

[4] Industry-specific patent databases and recent litigation reports.

Note: This analysis requires access to the full patent document for detailed claim language and prosecution history, which should be reviewed for comprehensive evaluation.

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Details for Patent 10,487,175

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Genentech, Inc. TECENTRIQ atezolizumab Injection 761034 May 18, 2016 ⤷  Get Started Free 2036-05-19
Genentech, Inc. TECENTRIQ atezolizumab Injection 761034 March 08, 2019 ⤷  Get Started Free 2036-05-19
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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