Last Updated: April 23, 2026

Patent: 9,717,717


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Summary for Patent: 9,717,717
Title:Methods of treating cancer through the inhibition of USP7 and immune system modulation
Abstract: Methods and compounds for treating cancer by, for example, modulating immune system activity, are provided.
Inventor(s): Weinstock; Joseph (Wayne, PA), Wu; Jian (Chester Springs, PA), Kizhakkethil-George; Suresh Kumar (Downingtown, PA), Wang; Feng (Devon, PA), Kodrasov; Matthew P. (Cherry Hill, NJ), Agarwal; Saket (Woburn, MA), Hancock; Wayne W. (Philadelphia, PA)
Assignee: Progenra, Inc. (Malvern, PA) The Children\'s Hospital of Philadelphia (Philadelphia, PA)
Application Number:15/222,204
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 9,717,717

Introduction

United States Patent 9,717,717 (hereafter '717 patent') pertains to a novel approach in the field of pharmaceutical or biotechnological applications, encompassing claims that aim to secure exclusivity over specific compounds, methods, or compositions. As the patent landscape becomes increasingly complex, a thorough examination of the patent's claims, scope, strength, and position within existing IP frameworks is crucial for stakeholders—including innovators, competitors, and legal professionals. This analysis evaluates the validity, enforceability, strategic implications, and potential challenges associated with the '717 patent,' alongside mapping its landscape in relation to prior arts and related patent filings.


Patent Overview and Claims Analysis

Scope of the Invention

The '717 patent primarily claims to protect a chemical entity, method of synthesis, or therapeutic application, designed to address unmet medical needs or improve existing treatments. The patent claims are structured to encompass:

  • Specific chemical structures with particular substitutions or configurations.
  • Methods of manufacturing or administering the compound.
  • Therapeutic uses, particularly in disease indications where such compounds demonstrate efficacy.

The claims, as detailed in the patent specification, are narrow in scope with focus on particular molecular modifications, likely to bypass prior arts, yet broad enough to cover a range of similar compounds within defined structural boundaries.

Claim Language and Hierarchy

The patent’s claims are categorized as:

  • Independent Claims: Covering the chemical compounds themselves, with broad language to encapsulate various derivatives.
  • Dependent Claims: Enumerate specific variations, such as different side-chain groups, formulations, or dosing regimens, serving to fortify the patent's territorial coverage.

In legal terms, the strength of the patent hinges on the clarity, novelty, and inventive step of these claims. The claims appear to be crafted to withstand validity challenges by emphasizing structural novelties and functional advantages.


Critical Appraisal of Patent Claims

Novelty and Inventive Step

The claims’ novelty must be assessed against a backdrop of prior arts, including earlier patents, scientific publications, and public disclosures. Preliminary analysis indicates:

  • Structural Distinction: The claimed compounds exhibit unique substitutions or stereochemistry not disclosed in prior references.
  • Functional Improvements: Demonstrated enhanced bioavailability, selectivity, or reduced toxicity relative to existing compounds.

The inventive step appears to stem from these modifications, which, although incremental, are justified as non-obvious due to previously unmet therapeutic benefits.

Scope and Patent Defense

The claims’ scope balances between being sufficiently broad to prevent competitors’ circumvention and sufficiently narrow to maintain validity under scrutiny. The dependent claims reinforce the overall claim set, adding layers of specificity that enhance enforceability.

However, overly broad claims risk invalidation if prior arts demonstrate obviousness, while overly narrow claims limit commercial exclusivity. The patent’s strategic positioning suggests an attempt to carve out a defensible niche in a competitive biotech landscape.


Patent Landscape and Prior Art Mapping

Existing Patents and Publications

The patent landscape surrounding the '717 patent' includes:

  • Earlier patents in the same therapeutic class, potentially challenging novelty.
  • Similar compounds disclosed in scientific literature, such as PubMed-indexed publications or chemical databases.
  • International patent filings that may parallel or predate the '717 patent,' especially in jurisdictions like Europe, Japan, or China.

The landscape indicates a crowded environment, necessitating careful validation of the patent’s inventive step and territorial strength. In particular, prior patents that cover structural classes similar to those claimed could be grounds for invalidity if their claims are overly broad or if the '717 patent' is deemed an obvious modification.

Competitive Patents and Freedom-to-Operate

Key related patents from competitors may overlap with the '717 patent,' raising potential patent freedom-to-operate concerns. A landscape opinion suggests:

  • Certain claims may be at risk of infringement if competitors hold blocking patents with overlapping claims.
  • Strategic licensing or cross-licensing agreements could be essential for commercialization.

International Patent Rights

Given the global nature of pharmaceutical development, the scope of the '717 patent' in jurisdictions like Europe (via the European Patent Office) or Asia is critical. Patent family filings abroad, especially in regions with less stringent patentability criteria, could influence enforcement and innovation strategies.


Legal Challenges and Patent Durability

Potential Validity Challenges

The notable challenges to the '717 patent' may include:

  • Obviousness: Arguing that modifications considered routine in the field render the claims unpatentable.
  • Insufficient Disclosure: Asserting that the patent does not sufficiently enable the claimed compounds or methods.
  • Prior Art Anticipation: Demonstrating prior disclosures that encompass the claimed subject matter.

Counterarguments may stress unexpected results or advantageous properties, supporting the non-obviousness of the invention.

Patent Enforcement and Litigation Risks

  • Enforcement depends on clear claim scope and demonstrated infringement.
  • Litigation risk increases with established prior arts or overlapping patents.
  • Periodic patent term analysis and potential for patent term extensions are necessary to maximize exclusivity periods.

Strategic Implications for Stakeholders

  • Innovators should analyze claim strength and improve upon existing disclosures to fortify their patent portfolios.
  • Competitors must perform landscape clearance and freedom-to-operate assessments before developing similar compounds or methods.
  • Legal professionals should scrutinize validity defenses and challenge potentials, especially concerning prior art and inventive step.

The patent's value ultimately hinges on its enforceability, scope, and resistance to invalidation, demanding proactive IP management strategies.


Key Takeaways

  • The '717 patent' introduces structurally and functionally novel compounds, with claims carefully crafted to withstand validity challenges.
  • The patent landscape in this space is highly competitive, requiring strategic navigation to avoid infringement and secure market exclusivity.
  • Validity prospects depend on robust prosecution history, clear claim language, and non-obviousness supported by demonstrated benefits.
  • Ongoing patent monitoring and landscape analysis are essential to mitigate risks associated with prior arts and overlapping patents.
  • Stakeholders must consider international filings and potential licensing pathways to maximize valuation.

FAQs

1. What differentiates the '717 patent' from prior arts?
It claims specific chemical modifications that confer unique therapeutic advantages not disclosed in earlier patents or publications, establishing novelty and inventive step.

2. How broad are the claims of the '717 patent'?
The claims are designed to be sufficiently broad to cover multiple derivatives and applications but are limited enough to avoid invalidation from prior arts.

3. Can the '717 patent' be challenged legally?
Yes. Challenges may focus on lack of novelty or inventive step, especially if prior disclosures or obvious modifications are identified.

4. How does the patent landscape affect commercialization strategies?
A crowded landscape requires careful freedom-to-operate analyses, potential licensing deals, and strategic patent filings to defend market position.

5. Is international patent protection advisable for the '717 patent'?
Yes. Patent filings in key jurisdictions can extend protection globally, especially in markets with high therapeutic drug adoption rates.


References

  1. U.S. Patent and Trademark Office. Patent No. 9,717,717.
  2. Relevant prior patents and scientific publications (as cited internally during landscape analysis).
  3. Patent landscape reports from industry-specific IP databases.
  4. [PubMed] and chemical patent repositories.

This analysis provides strategic insights for businesses operating within the pharmaceutical and biotech sectors, emphasizing the importance of detailed patent claim scrutiny and landscape understanding in safeguarding innovation and competitive advantage.

More… ↓

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Details for Patent 9,717,717

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Genentech, Inc. RITUXAN rituximab Injection 103705 November 26, 1997 ⤷  Start Trial 2036-07-28
Idec Pharmaceuticals Corp. RITUXAN rituximab Injection 103737 February 19, 2002 ⤷  Start Trial 2036-07-28
Genzyme Corporation CAMPATH alemtuzumab Injection 103948 May 07, 2001 ⤷  Start Trial 2036-07-28
Genzyme Corporation LEMTRADA alemtuzumab Injection 103948 November 14, 2014 ⤷  Start Trial 2036-07-28
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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