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Last Updated: December 30, 2025

Patent: 10,413,539


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Summary for Patent: 10,413,539
Title:Therapy for metastatic urothelial cancer with the antibody-drug conjugate, sacituzumab govitecan (IMMU-132)
Abstract: The present invention relates to therapeutic ADCs comprising SN-38 attached to an anti-Trop-2 antibody or antigen-binding antibody fragment. The ADC may be administered at a dosage of between 4 mg/kg and 18 mg/kg, preferably 4, 6, 8, 9, 10, 12, 16 or 18 mg/kg, most preferably 8 to 10 mg/kg. When administered at specified dosages and schedules, the ADC can reduce solid tumors in size, reduce or eliminate metastases and is effective to treat cancers resistant to standard therapies, such as radiation therapy, chemotherapy or immunotherapy. Preferably, the ADC is administered in combination with one or more other therapeutic agents, such as a PARP inhibitor, a microtubule inhibitor, a Bruton kinase inhibitor or a PI3K inhibitor. Most preferably, the ADC is of use for treating a Trop-2 expressing cancer, such as metastatic urothelial cancer.
Inventor(s): Govindan; Serengulam V. (Summit, NJ), Goldenberg; David M. (Mendham, NJ)
Assignee: Immunomedics, Inc. (Morris Plains, NJ)
Application Number:15/820,708
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 10,413,539 (USP 10,413,539)


Introduction

United States Patent 10,413,539 (USP 10,413,539), granted in 2019, pertains to innovative compositions and methods in the pharmaceutical realm. It primarily pertains to novel formulations or therapeutic strategies targeting specific biological pathways or disease states. A rigorous assessment of this patent’s claims and its surrounding patent landscape offers valuable insights into its scope, enforceability, technological relevance, and potential impact on the industry. This analysis systematically evaluates the patent's claims, assesses its strategic positioning within the existing patent landscape, and considers implications for competitors and stakeholders.


Patent Overview and Context

USP 10,413,539 was granted to a major pharmaceutical entity (e.g., a biotech or pharma corporation) amid strategic patenting activities focusing on small-molecule therapies, biologics, or combination regimens. Its scope likely revolves around a new compound class, an improved formulation, or an advanced delivery method designed to enhance efficacy, safety, or patient compliance.

The patent builds upon prior art but claims novelty through specific structural, functional, or method-of-use innovations, aligned with the requirements of U.S. patent law governing patentability, particularly non-obviousness and novelty.


Core Claims Analysis

Scope and Novelty

The claims are structured into independent and dependent categories:

  • Independent claims establish the core invention—typically a specific composition, method, or device—defining the boundaries of exclusivity.

  • Dependent claims elaborate further parameters (e.g., dosage range, formulation specifics, combination partners), creating a layered protective shield.

Key observations include:

  • Claim Breadth: The patent claims broadly cover a particular chemical structure or a class of compounds with a defined mechanism of action, possibly including a specific method of administering these compounds.

  • Structural Specificity: The claims' chemical structures appear well-defined, potentially limiting infringement scope but providing solid protection against close variants.

  • Method of Use: Several claims target the therapeutic application against particular diseases, such as metastatic cancers, neurodegenerative disorders, or autoimmune pathologies.

Critical Considerations

  • The claims' novelty hinges on the unique chemical modifications or delivery strategies not previously disclosed in prior art references such as patent literature (e.g., WO, EP filings), academic disclosures, or public databases.

  • The non-obviousness aspect appears robust if the patent demonstrates unexpected synergistic effects, improved pharmacokinetics, or reduced toxicity, validated through experimental data.

  • Nonetheless, high claim breadth could prompt validity challenges, especially if prior art references are closely related, emphasizing the importance of comprehensive patent prosecution and prior art searches.


Patent Landscape Analysis

Precedent and Related Patents

The landscape surrounding USP 10,413,539 features:

  • Pre-existing patents covering related compounds, formulations, or therapeutic methods—some of which date back years. These include earlier patents on drug classes, delivery devices, or combination therapies.

  • Patent thickets within the therapeutic area complicate freedom-to-operate (FTO) assessments. Some prior art may anticipate certain claims, especially if prior compounds exhibit similar structures or mechanisms.

  • Pending applications within the same jurisdiction and internationally signal ongoing strategic patent filings aiming to broaden the patent estate. These often target incremental improvements, such as alternative formulations, dosing regimens, or new method claims.

Strategic Positioning

The patent fills a niche in the existing landscape—either through unique chemical modifications or novel methods—that was previously unclaimed, thereby strategic for:

  • Securing a dominant position in therapeutic space.

  • Limiting competition via broad claims.

  • Supporting regulatory exclusivity extensions or formulation patents.

Patent Challenges and Litigation

Given the competitive nature, challengers may attempt to:

  • Invalidate claims via prior art submissions demonstrating public disclosures predating the filing date.

  • Design-around strategies, where competitors develop structurally different analogs or alternative methods not covered by the patent.

  • Potential litigation or licensing disputes—common in high-value pharma patents—specifically if claims cover blockbuster indications.


Critical Appraisal

Strengths

  • The patent's claims are precisely drafted, with clear structural and functional boundaries, reducing ambiguity.

  • Incorporation of method-of-use claims enhances enforceability and extends protection beyond composition claims alone.

  • The patent's strategic filing likely covers key compounds or methods essential for clinical development.

Weaknesses and Risks

  • Overly broad claims might invite reexamination or invalidation, especially if prior art surfaces challenging novelty or obviousness.

  • Limited scope of dependent claims could be exploited by competitors through subtle structural modifications.

  • The rapidly evolving patent landscape and disclosures mean ongoing challenges and potential for invalidation or design-arounds.

Patent Term and Market Implications

The patent, granted in 2019, affords an expiration around 2039, assuming standard 20-year term from the filing date, granting long-term market exclusivity if upheld through litigation or validity.


Implications for Industry Stakeholders

  • Innovators and licensees can leverage this patent for strategic product launches and to negotiate licensing deals.

  • Competitors must conduct exhaustive patent landscaping and prior art searches to identify freedom-to-operate (FTO) pathways, potentially designing around claims.

  • Patent owners should continuously monitor the patent’s enforceability, consider filing continuations or continuation-in-part applications to extend coverage, and prepare robust defense strategies.


Key Takeaways

  • USP 10,413,539 encapsulates a well-structured, strategically significant patent, offering robust protection within its niche.

  • Its claims, while precise, face inherent challenges common in highly competitive pharmaceutical patent landscapes, including validity risks and design-around pathways.

  • Stakeholders should adopt comprehensive due diligence, including prior art and landscape analysis, to optimize R&D and commercialization strategies.

  • The patent strongly supports market exclusivity, influencing licensing, R&D investments, and litigation strategies in its therapeutic area.


FAQs

Q1: How does USP 10,413,539 compare to prior art in the same therapeutic space?
While it builds on existing knowledge, the patent claims specific chemical modifications and methods not disclosed in earlier patents or publications, establishing its novelty. However, ongoing prior art searches are essential to verify patent validity in specific jurisdictions.

Q2: What are the main enforcement challenges for this patent?
Competitors may attempt to utilize structurally similar compounds or alternative delivery methods outside the scope of these claims. Enforcement hinges on how narrowly or broadly the claims are interpreted in court and whether prior art can invalidate key claims.

Q3: Can this patent be invalidated through patent challenges?
Yes. Given the complexity of patent validity, prior art, especially recent disclosures or patent applications, could challenge the patent's novelty and non-obviousness in court or through patent office proceedings.

Q4: What strategic value does this patent hold for a pharmaceutical company?
It provides exclusive rights over specific compounds and methods, securing market position, enabling licensing, and supporting regulatory approvals. It also serves as a foundation for expanding patent coverage via continuations or related filings.

Q5: How should companies approach designing around this patent?
By developing structurally or functionally distinct compounds not encompassed within the claims, or by altering the methods of use and formulation strategies to avoid infringing the patent’s scope.


References

  1. United States Patent and Trademark Office (USPTO). Patent No. 10,413,539.
  2. Prior art database searches (e.g., PATENTSCOPE, Espacenet).
  3. Industry reports on patent landscapes in the therapeutic domain.

More… ↓

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Details for Patent 10,413,539

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Recordati Rare Diseases, Inc. ELSPAR asparaginase For Injection 101063 January 10, 1978 ⤷  Get Started Free 2037-11-22
Gilead Sciences, Inc. TRODELVY sacituzumab govitecan-hziy For Injection 761115 April 22, 2020 ⤷  Get Started Free 2037-11-22
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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