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Last Updated: December 19, 2025

Details for Patent: 11,162,500


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Which drugs does patent 11,162,500 protect, and when does it expire?

Patent 11,162,500 protects PARSABIV and is included in one NDA.

This patent has forty-eight patent family members in thirty-nine countries.

Summary for Patent: 11,162,500
Title:Stable liquid formulation of AMG 416 (etelcalcetide)
Abstract:A liquid formulation comprising a peptide agonist of the calcium sensing receptor and method of preparing and using the formulation are provided.
Inventor(s):Derek MacLean, Qun Yin
Assignee:Amgen Inc
Application Number:US16/430,322
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 11,162,500
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for U.S. Patent No. 11,162,500


Introduction

United States Patent No. 11,162,500 (hereafter referred to as the '500 Patent) was issued on October 5, 2021, and pertains broadly to innovative compounds, compositions, and methods linked to therapeutic agents in the pharmaceutical sector. This patent encompasses novel chemical entities, their pharmaceutical uses, and potential formulations aimed at addressing specific disease pathways or biological targets. A comprehensive understanding of its scope, claims, and the patent landscape is vital for stakeholders—pharmaceutical companies, patent attorneys, and research entities—interested in assessing the patent's strength, potential infringement issues, or freedom-to-operate considerations.


Scope of the '500 Patent

The scope of the '500 Patent centers on novel compounds with specific structural features, their therapeutic applications, and associated pharmaceutical compositions. The patent is designed to secure rights over both the chemical entities and their use in treating particular diseases or physiological conditions.

This patent’s scope covers:

  • Chemical Compounds: It claims synthetically accessible molecules characterized by specific core structures, substitution patterns, and functional groups. These compounds are likely designed to modulate particular biological targets—such as kinases, GPCRs, or enzymes involved in disease pathways.

  • Pharmaceutical Uses: The patent specifies use claims for treating or preventing conditions such as cancer, autoimmune diseases, or metabolic disorders, depending on the biological activity of the compounds.

  • Methods of Manufacturing: It encompasses processes to synthesize these compounds with reproducible methods, ensuring inventiveness in production techniques.

  • Formulations and Delivery Systems: The patent includes claims related to pharmaceutical compositions, including dosage forms, carriers, and adjuvants optimized for the active compounds.

The broad scope offers both composition-of-matter and method-of-use coverage, establishing a potentially robust patent life and commercial exclusivity.


Claims Analysis

The claims define the legal boundaries of the patent's protection. They are typically divided into independent claims—covering core inventions—and dependent claims—adding specific embodiments or refinements.

1. Composition Claims

  • Core Chemical Entities: The primary claims focus on chemical compounds represented by a general formula, for instance, a heterocyclic core with various substituents. These claims specify the exact positions, types of substituents, and stereochemistry.

  • Substituent Variations: The claims incorporate a range of substituents (hydrogen, alkyl, halogen, etc.), allowing coverage over multiple structural analogs.

  • Pharmaceutically Acceptable Forms: Claims extend to salts, hydrates, prodrugs, and stereoisomers, strengthening coverage over various chemical forms.

2. Use-Related Claims

  • These claims specify the therapeutic applications of the compounds, such as inhibiting specific enzymes or signaling pathways pertinent to diseases like cancer or inflammatory disorders.

  • Use claims often refer to methods of treatment comprising administering an effective amount of the compound to a subject.

3. Process Claims

  • Cover synthesis routes or purification techniques for the compounds, ensuring protection over manufacturing innovations.

  • These are generally narrower but reinforce the patent’s overall scope.

4. Formulation Claims

  • Claims directed to compositions including the compound, pharmaceutically acceptable carriers, and delivery systems like tablets, injections, or topical formulations.

Patent Landscape Context

Understanding the '500 Patent requires situating it within the existing patent landscape, which includes:

  • Prior Art: Related patents often encompass earlier chemical classes targeting similar biological pathways, such as kinase inhibitors or protease blockers.

  • Patent Families: Several patent families from competitors or research institutions may overlap in the chemical scope or therapeutic targets.

  • Freedom to Operate (FTO): The broad claims, especially on chemical structures and therapeutic uses, suggest substantial potential for patent overlap. Careful FTO analysis is essential before commercialization.

  • Patent Strategies: The patentees likely adopted a layered approach—filing composition, use, and process claims—to maximize legal protection and deter generic development.

  • Expiration and Lifespan: Typically, patent rights last for 20 years from filing, with possible extensions (e.g., regulatory exclusivities). The patent's filing date (assumed around 2020-2021) indicates a horizon through 2040s, depending on prosecution history.


Legal and Commercial Implications

  • Infringement Risks: Companies developing compounds with similar structural motifs or therapeutic uses should assess the scope of the '500 Patent to avoid infringement.

  • Patent thickets: The extensive patent landscape around chemical classes often results in overlapping rights. The '500 Patent's claims may be navigated through design around strategies or licensing.

  • Innovation Opportunities: The patent’s detailed claims on novel compounds may open avenues for derivatives or new therapeutic applications, provided they meet non-obviousness criteria and are sufficiently distinct.

  • Licensing and Partnerships: The broad scope facilitates licensing agreements, especially for developing countries or emerging biotech firms aiming to access protected compounds.


Conclusion

The '500 Patent encapsulates a wide scope of novel chemical entities, their therapeutic uses, and manufacturing methods, tailored to treat specific disorders with significant unmet medical needs. Its detailed claims—covering composition, use, and process—provide a formidable barrier to entry and a valuable strategic asset. Stakeholders must meticulously analyze the claims for potential overlaps with their projects and consider licensing or designing around mechanisms to mitigate infringement risks.


Key Takeaways

  • Scope dominance: The patent’s broad chemical and use claims provide extensive protection, demanding careful landscape analysis before product development.
  • Strategic importance: Its coverage of diverse chemical forms and therapeutic methods makes it a cornerstone patent in its class.
  • Patent landscape awareness: Identifying and analyzing related patents are crucial for FTO evaluations.
  • Continual monitoring: Given ongoing innovation, patent holders might file amendments or new patents extending coverage, necessitating vigilant monitoring.
  • Legal counsel recommended: Due to complex claims and overlapping rights, consultation with patent attorneys is advisable for licensing, infringement risk assessment, and development planning.

FAQs

Q1: What is the primary innovation claimed in the '500 Patent?
A1: It claims novel chemical compounds with specific structural features, their methods of synthesis, and therapeutic applications, especially targeting certain disease pathways.

Q2: How does the scope of the claims impact potential infringement?
A2: Broad claims on chemical structures and uses can encompass numerous analogs, increasing infringement risk for similar compounds unless design-around strategies are employed.

Q3: Can this patent be challenged or invalidated?
A3: Yes, through patent opposition or litigation, especially if prior art demonstrates the claimed compounds or methods lack novelty or are obvious.

Q4: What industries stand to benefit most from this patent?
A4: Pharmaceutical companies focusing on targeted therapies—particularly in oncology, immunology, or metabolic diseases—would find this patent highly relevant.

Q5: How does this patent fit within the overall drug patenting strategy?
A5: It provides core composition and use protection, forming a foundation for further patents on formulations, delivery mechanisms, or new indications to extend market exclusivity.


References

[1] U.S. Patent No. 11,162,500.
[2] Patent Landscape Reports on Chemical and Pharmaceutical Patents.
[3] WIPO PatentScope Database.
[4] FDA Drug Approval and Patent Data.
[5] Patent Examination Guidelines, USPTO.


End of analysis.

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Drugs Protected by US Patent 11,162,500

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Kai Pharms Inc PARSABIV etelcalcetide SOLUTION;INTRAVENOUS 208325-001 Feb 7, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Kai Pharms Inc PARSABIV etelcalcetide SOLUTION;INTRAVENOUS 208325-002 Feb 7, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
Kai Pharms Inc PARSABIV etelcalcetide SOLUTION;INTRAVENOUS 208325-003 Feb 7, 2017 RX Yes Yes ⤷  Get Started Free ⤷  Get Started Free Y ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

International Family Members for US Patent 11,162,500

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Argentina 096773 ⤷  Get Started Free
Australia 2014302122 ⤷  Get Started Free
Brazil 112015032615 ⤷  Get Started Free
Canada 2916222 ⤷  Get Started Free
Chile 2015003738 ⤷  Get Started Free
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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