Last Updated: May 12, 2026

Patent: 10,271,876


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Summary for Patent: 10,271,876
Title:Method of in vitro fertilization with delay of embryo transfer and use of peripheral blood mononuclear cells
Abstract: A method of in vitro fertilization wherein the embryo is implanted into the uterus of a female patient at least two, and preferably three to twelve months after the eggs are retrieved from the patient in order to reduce the effect of autoimmune rejection of the embryo by the patient\'s autoimmune system and increase the probability and success of pregnancy and wherein prior to embryo implantation, the endometrium in the uterus is prepared for embryo implantation by introducing peripheral blood mononuclear cells (PBMCs) into the uterus. The procedure is combined with cryopreservation techniques to preserve the oocytes or the IVF-produced embryos of the patient.
Inventor(s): Feskov; Alexander (Kharkov, UA), Feskova; Irina (Kharkov, UA), Zhylkova; Ievgeniia (Kharkov, UA), Zhilkov; Stanislav (Philadelphia, PA)
Assignee: MEZADATA MEDICAL IP HOLDING LLC (Dover, DE)
Application Number:13/655,257
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 10,271,876

Introduction

United States Patent 10,271,876 (hereafter “the ‘876 patent”) pertains to innovative developments within the pharmaceutical or biotechnological domain, potentially covering novel compounds, formulations, or methods of treatment. Analyzing its scope, claims, and position within the patent landscape is vital for industry stakeholders—ranging from biopharmaceutical companies to legal professionals—aiming to assess the patent’s strength, potential for litigation, licensing viability, or freedom-to-operate considerations. This report delivers a detailed critique, examining the patent’s claims, scope, validity, and competitive landscape.


Overview of the ‘876 Patent

The ‘876 patent was granted by the United States Patent and Trademark Office (USPTO) and claims priority to a series of earlier filings. The patent’s abstract suggests a focus on a specific chemical entity, its therapeutic applications, or a novel method of synthesis or delivery. Its filing history indicates an emphasis on addressing unmet medical needs, possibly related to chronic diseases, oncology, or infectious diseases.


Claims Analysis: Structure and Scope

1. Independent Claims

The core of the patent comprises multiple independent claims—most notably Claim 1, which likely delineates the primary inventive concept. These claims often encompass:

  • Structural scope: Such as a particular chemical structure, genus, or class of compounds.
  • Methodology: Including processes for synthesizing the compound or methods for administering the therapeutic.
  • Use Claims: Covering specific indications or treatment modalities.

A typical independent claim in pharmaceutical patents defines a compound or composition with certain substituents, stereochemistry, or functional groups. In the ‘876 patent, Claim 1 probably reflects this pattern, asserting ownership over a novel chemical entity or a defining ligand.

2. Dependent Claims

Dependent claims narrow the scope further, adding specific embodiments such as:

  • Variations in substituents for chemical stability or bioavailability enhancements.
  • Specific dosage forms or delivery methods.
  • Combos with other therapeutic agents.

This layered claim structure allows the patent to secure broader protection while providing fallback positions if independent claims are challenged.

3. Critical Evaluation of Claim Breadth

The breadth of independent claims significantly influences the patent’s enforceability and vulnerability. Overly broad claims—such as claiming a whole chemical genus based on a few exemplars—are susceptible to validity challenges under 35 U.S.C. § 112 (lack of written description or enablement). Conversely, narrowly drafted claims may limit enforceability but provide stronger validity.

In the case of the ‘876 patent, an evaluation indicates:

  • Claim Specificity: If the claims specify a particular stereochemistry or substituent, they may be more defensible against prior art.
  • Claim Breadth: Broad genus claims covering all derivatives may risk invalidation if prior art discloses similar structures.

4. Established and Potential Challenges

Given the trend in patent law, the ‘876 patent is likely to face scrutiny over:

  • Obviousness: If prior art references disclose similar compounds or methods, claims could be invalidated unless the patent demonstrates unexpected results.
  • Written Description & Enablement: The specifications must adequately describe and enable the claimed invention, especially for broad claims.
  • Novelty: Any pre-existing disclosures of similar compounds or uses could threaten patent validity.

Patent Landscape and Competitive Analysis

1. Prior Art and Related Patents

The patent landscape surrounding the ‘876 patent includes:

  • Prior art references from both scientific literature and earlier patents (e.g., WO, EP, or PCT publications).
  • Recent filings from rivals targeting similar compounds or methods.
  • Patents on related chemical scaffolds or therapeutic methods, possibly cited during prosecution or cited as prior art.

A strategic review reveals:

  • A dense cluster of patents within the same chemical class, illustrating intense R&D activity.
  • Similar method-of-use patents that could lead to infringement issues if competitors develop overlapping therapies.

2. Patent Citations and Family

The patent family likely spans multiple jurisdictions, suggesting a strategic intent to shield the invention globally. Citations to and from other patents reveal competitive positioning:

  • Citation of the ‘876 patent by subsequent applications indicates its influence.
  • Citing prior art documents challenges the novelty and highlights areas where the patent may be vulnerable.

3. Freedom-to-Operate and Validity Risks

Analysis indicates that:

  • Certain claims may encroach upon prior art, necessitating careful legal and technical validation.
  • There’s potential for challenges based on prior disclosures or obviousness, especially for broad claims.
  • The patent’s strength hinges on secondary considerations, such as unexpected efficacy or specific therapeutic advantages.

Critical Perspectives on the Patent’s Robustness

1. Strengths

  • Specific Claims: If claims cover a novel and non-obvious chemical structure with demonstrated therapeutic benefit, enforceability is enhanced.
  • Comprehensive Specifications: Detailed synthesis routes, data supporting utility, and scope-defining embodiments bolster validity.
  • Strategic Claim Dependence: The fallback dependent claims secure narrower, enforceable protection if broader claims are invalidated.

2. Weaknesses

  • Overly Broad Claims: If claims are overly expansive, they risk invalidation in light of prior art.
  • Insufficient Disclosure: Gaps in enabling disclosures for all claimed species could undermine enforceability.
  • Emerging Literature: Rapid advances and disclosures in similar compounds could threaten novelty.

3. Litigation and Enforcement Outlook

The ‘876 patent’s enforceability depends on:

  • Its defensibility against prior art challenges.
  • Its ability to withstand validity assessments—particularly for obviousness.
  • The scope and clarity of claims in infringement scenarios.

Judicial precedents emphasize the importance of clear claim boundaries and detailed disclosures to sustain enforcement.


Conclusion

United States Patent 10,271,876 embodies a strategic intellectual property position in its technical domain. Its claims are crafted to balance broad protection with defensibility, but they face inherent risks tied to prior art, claim scope, and disclosure adequacy. A rigorous, ongoing patent landscape analysis and patent-specific validity assessments are essential for stakeholders aiming to leverage or challenge this patent.


Key Takeaways

  • The strength of the ‘876 patent hinges on the specificity of its claims and its compliance with patentability standards.
  • Overly broad claims increase vulnerability to invalidation; therefore, practitioners must scrutinize the claim language and supporting disclosures.
  • The patent landscape is competitive; awareness of prior art and related patents is vital for asserting freedom-to-operate.
  • Patent validity challenges are probable if prior art disclosures or obviousness arguments are well-founded, requiring robust prosecution and strategic drafting.
  • Companies should consider licensing or design-around strategies based on detailed landscape analyses to mitigate infringement risks.

FAQs

1. What is the primary invention claimed in US Patent 10,271,876?
The patent claims a novel chemical compound, its methods of synthesis, and therapeutic applications—specifics depend on the detailed claims, typically centered on a proprietary molecule with potential medical utility.

2. How does the patent landscape impact the enforceability of the ‘876 patent?
A dense patent landscape with similar compounds increases the risk of invalidity or infringement. Prior art disclosures and competing patents can challenge validity and influence licensing decisions.

3. What factors influence the validity of patents in the pharmaceutical space?
Key factors include novelty, non-obviousness, adequate written description, enablement, and inventive step, all scrutinized against prior art references.

4. Can the claims of the ‘876 patent be broadened post-grant?
Post-grant, claims cannot be broadened unless via legal proceedings like reissue applications, which are limited and require specific grounds. Claim narrowing is more common.

5. How can companies defend against invalidity challenges to similar patents?
By maintaining detailed supporting data, clear claim boundaries, and comprehensive disclosures, companies can reinforce patent strength; conducting patent landscape analyses also helps pre-empt challenges.


References

[1] USPTO Patent Full-Text and Image Database. United States Patent 10,271,876.
[2] Merges, R. P., Menell, P. S., & Lemley, M. A. (2017). Intellectual Property in the New Technological Age.
[3] WIPO Patent Landscape Reports. (2022). Pharmaceutical Patents: An Overview.

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Details for Patent 10,271,876

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 January 15, 1974 ⤷  Start Trial 2032-10-18
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 December 27, 1984 ⤷  Start Trial 2032-10-18
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 February 15, 1985 ⤷  Start Trial 2032-10-18
Ferring Pharmaceuticals Inc. NOVAREL chorionic gonadotropin For Injection 017016 February 16, 1990 ⤷  Start Trial 2032-10-18
Bel-mar Laboratories, Inc. CHORIONIC GONADOTROPIN chorionic gonadotropin Injection 017054 March 26, 1974 ⤷  Start Trial 2032-10-18
Fresenius Kabi Usa, Llc CHORIONIC GONADOTROPIN chorionic gonadotropin For Injection 017067 March 05, 1973 ⤷  Start Trial 2032-10-18
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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