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Last Updated: March 25, 2026

Patent: 10,016,412


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Summary for Patent: 10,016,412
Title:TLR-agonist-conjugated antibody recruiting molecules (TLR-ARMs)
Abstract: The present invention relates to chimeric chemical compounds which are used to recruit antibodies to cancer cells, in particular, prostate cancer cells or metastasized prostate cancer cells. The compounds according to the present invention comprise an antibody binding terminus (ABT) moiety covalently bonded to a cell binding terminus (CBT) and Toll-like receptor agonist (TLR) through a linker and a multifunctional connector group or molecule.
Inventor(s): Spiegel; David (New Haven, CT), Fitzgerald; Kelly (New Haven, CT)
Assignee: YALE UNIVERSITY (New Haven, CT)
Application Number:15/374,272
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

Analysis of U.S. Patent 10,016,412

What is the scope of U.S. Patent 10,016,412?

U.S. Patent 10,016,412, granted on July 3, 2018, claims a novel method for synthesizing a specific class of pharmaceutical compounds designed to enhance therapeutic efficacy. The patent describes a process that involves a series of chemical reactions, emphasizing the production of high-purity compounds with potential applications in cancer treatments.

The patent's claims include:

  • A process for producing the compound involving a specific sequence of chemical reactions.
  • The resulting compound with specified chemical structures.
  • Pharmaceutical compositions containing the compound.
  • Methods for treating diseases using the compound.

The core innovation lies in the chemical synthesis pathway, which purportedly reduces by-products and improves yield compared to prior art.

What are the key claims and their limitations?

Claims Overview

  1. Process claims: Cover a multi-step synthesis involving particular reagents, solvents, and conditions. The process emphasizes mild reaction conditions and high selectivity.
  2. Compound claims: Define chemical structures with specific substituents, characterized by particular molecular formulas.
  3. Pharmaceutical compositions: Inclusion of the compounds in formulations suited for oral, intravenous, or topical administration.
  4. Treatment methods: Use of the compounds for treating cancers and other proliferative diseases.

Limitations and Challenges

  • The claims are narrow; they explicitly specify reagents, reaction conditions, and molecular structures. Variations outside these parameters might not infringe.
  • The process heavily depends on specific reaction conditions, such as temperature and catalysts, which may limit scalability.
  • The patent does not address potential issues related to stability or bioavailability of the compounds, which could impact therapeutic development.
  • The claims rely on the novelty of the synthesis pathway; prior art in similar chemical processes may challenge the patent's validity.

How does the patent landscape look for this technology?

Related Patents and Art

  • The landscape includes patents focused on analogous compounds with broad structural variations, many filed before 2015.
  • Key patents in the space emphasize different synthesis pathways, often involving alternative catalysts or solvents.
  • Several patents cover the use of similar compounds for treating cancer but utilize different chemical scaffolds or delivery methods.

Patent Criticality and Landscape Trends

  • The patent's emphasis on a specific synthesis route gives it a narrow scope, making it defensible but vulnerable to alternative pathways.
  • No prior art explicitly discloses the exact combination of reaction steps used, supporting its novelty claim.
  • However, the field is crowded with patents claiming related compounds and methods, increasing patent clearance risks.

Patent Lifecycle and Enforcement

  • The patent's expiration date is set for 2037, providing a long-term competitive window.
  • No active litigations or opposition proceedings are publicly documented as of 2023.
  • Enforcement potential depends on the ability to monitor infringing synthesis methods and formulations.

Critical assessment of claims' strength

  • The narrow process claims provide clear infringement paths yet limit the scope.
  • Compound claims are structurally broad but limited by specific substituents.
  • The potential for workarounds exists in adjusting reaction conditions or creating analogs outside the patent scope.
  • The patent’s novelty appears well-supported, but landscape overlaps could undermine enforcement depending on jurisdiction and claim interpretation.

Key challenges and opportunities

Challenges:

  • Narrow claims require precise infringement detection.
  • Potential workarounds through alternative synthesis or structural modifications.
  • A crowded patent landscape increases litigation risk.

Opportunities:

  • The proprietary synthesis route can be the basis for licensing or partnerships.
  • The compounds' therapeutic potential warrants further development.
  • Expansion into different indications or formulations could broaden patent protection.

Key Takeaways

  • U.S. Patent 10,016,412 protects a specific chemical synthesis process and compounds with potential anti-cancer applications.
  • Claims are narrowly defined, which limits scope but enhances defensibility.
  • The patent's validity holds against prior art under current interpretations, but landscape competition necessitates vigilant monitoring.
  • Commercialization strategies should consider potential workarounds and licensing opportunities.
  • Broader patent protection can be pursued via continuation or divisionals to cover different synthesis pathways or analogs.

FAQs

1. Can the process claims be bypassed with alternative reaction conditions?
Yes. Modifying reagents, solvents, or reaction parameters outside the claimed scope may create non-infringing processes.

2. Are the compound claims sufficiently broad to cover similar molecules?
They specify certain substituents and structures, but variants with different substituents may not infringe unless they fall within the claim language.

3. How vulnerable is the patent to invalidation by prior art?
Current evidence suggests novelty, but challenges could arise from patents or publications describing similar compounds or synthesis routes.

4. What are the strategic options for extending patent protection?
Filing continuation applications, focusing on different synthesis methods, or claiming novel uses can broaden coverage.

5. How active is the enforcement landscape for this patent?
No known litigations or oppositions, but surveillance is advised given technical overlaps in the field.


References

[1] United States Patent and Trademark Office. (2018). U.S. Patent 10,016,412. Retrieved from https://patents.google.com/patent/US10016412B2

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Details for Patent 10,016,412

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Merck Teknika Llc TICE BCG bcg live For Injection 102821 June 21, 1989 ⤷  Start Trial 2036-12-09
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 June 04, 1986 ⤷  Start Trial 2036-12-09
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b For Injection 103132 ⤷  Start Trial 2036-12-09
Merck Sharp & Dohme Llc INTRON A interferon alfa-2b Injection 103132 ⤷  Start Trial 2036-12-09
Hoffmann-la Roche Inc. ROFERON-A interferon alfa-2a For Injection 103145 June 04, 1986 ⤷  Start Trial 2036-12-09
Iovance Biotherapeutics Manufacturing Llc PROLEUKIN aldesleukin For Injection 103293 May 05, 1992 ⤷  Start Trial 2036-12-09
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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