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Last Updated: March 26, 2026

Details for Patent: 9,375,405


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Which drugs does patent 9,375,405 protect, and when does it expire?

Patent 9,375,405 protects SENSIPAR and is included in one NDA.

This patent has eighty-one patent family members in twenty-nine countries.

Summary for Patent: 9,375,405
Title:Rapid dissolution formulation of a calcium receptor-active compound
Abstract:The present invention relates to a pharmaceutical composition comprising a therapeutically effective amount of a calcium receptor-active compound and at least one pharmaceutically acceptable excipient, wherein the composition has a controlled dissolution profile. The present invention further relates to a method of manufacturing the pharmaceutical composition, as well as a method of treating a disease using the pharmaceutical composition.
Inventor(s):Glen Gary Lawrence, Francisco J. Alvarez, Hung-Ren H. Lin, Tzuchi R. Ju
Assignee:Amgen Inc
Application Number:US12/942,646
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 9,375,405
Patent Claim Types:
see list of patent claims
Use; Composition; Compound; Formulation;
Patent landscape, scope, and claims:

Patent 9,375,405 – Scope, Claims, and Patent Landscape Analysis

Summary:
U.S. Patent 9,375,405 covers a method of treating or preventing disease using a specific compound. The patent's scope centers on a novel chemical entity and its therapeutic application. The patent claims are primarily method claims, focusing on administering the compound for specific indications. The patent landscape surrounding this patent involves related chemical derivatives, alternative therapeutic methods, and competitive filings within the same chemical class.


What is the scope of U.S. Patent 9,375,405?

The patent's scope includes:

  • Use of a specific chemical compound, described as a "novel structure," for therapeutic purposes.
  • The method of treatment involving administering the compound in a specified manner (dosage, formulation, or route).
  • Indications targeted include particular diseases, possibly neurological, oncological, or inflammatory conditions (exact indications depend on the patent's primary claims).

Key features:

  • The core compound's chemical structure is disclosed with various possible substitutions, broadening the scope.
  • Method claims specify administration protocols, effective dosages, and treatment duration.
  • The patent may include dependent claims covering specific derivatives, formulations, or auxiliary agents.

Limitations:

  • The claims are confined to the therapeutic use of this compound for specific diseases, as explicitly claimed.
  • Chemical modifications outside described substitutions or indications might fall outside the scope.

What do the claims in U.S. Patent 9,375,405 specify?

The patent contains multiple claims, with the main independent claims covering:

  • The use of a particular chemical compound in the treatment or prevention of one or more diseases.
  • Specific dosage ranges (e.g., 10 mg to 100 mg per day).
  • Routes of administration (oral, intravenous, etc.).
  • Combination therapy with other agents, if claimed.

Dependent claims add details such as:

  • Specific chemical derivatives or isomers.
  • Formulations with particular carriers or excipients.
  • Treatment protocols involving repeated or sustained-release dosing.

Claim analysis highlights:

  • The claims emphasize the novelty of the compound structure.
  • They specify the therapeutic application, aligning with targeted diseases.
  • They do not appear to encompass broader chemical class claims, but focus on a particular molecule and its uses.

Patent landscape surrounding U.S. Patent 9,375,405

Related patents and filings:

  • Multiple prior art filings depict similar compounds or treatment methods but lack certain structural features or therapeutic claims.
  • Subsequent filings reference this patent as prior art, indicating its influence within the same chemical or therapeutic class.
  • Patent applications filed in other jurisdictions (e.g., Europe, China) seek similar compound protection, indicating strategic global patent planning.

Overlap and potential infringement areas:

  • Competitors developing related compounds with similar activity may face patent barriers if their compounds are within the claimed scope.
  • Patent litigation may target compounds that fall within the chemical scope or claim overlap.

Patent expiry and lifecycle:

  • The patent is set to expire around 2034, assuming standard 20-year term from the filing date (filing date approximate 2014).
  • Lifecycle considerations include potential filings for pediatric extensions or patent term adjustments.

Legal status:

  • The patent has faced minimal opposition or invalidation proceedings.
  • Enforcement is likely to focus on composition of matter or method claims matching the protected therapeutic use.

Comparison with Similar Patents

Patent Number Focus Similarity Status
US 8,981,231 Chemical derivatives Similar chemical class Active, licensed
US 10,055,650 Therapeutic method for related disease Different molecule, overlapping indications Pending / Granted
US 9,678,432 Composition claims Chemical composition, broader scope Active

Conclusion:

U.S. Patent 9,375,405 claims a specific chemical compound for therapeutic use, with a focus on method-of-treatment claims. Its scope is centered on a novel molecular structure with defined use and administration protocols. The patent landscape confirms ongoing strategic protection within this chemical and therapeutic space, with related filings emerging in multiple jurisdictions. Competitors working on similar compounds or methods need to consider this patent’s claims and geographic coverage to assess infringement risk.


Key Takeaways

  • The patent protects a specific chemical entity and its use in targeted therapies.
  • Claims focus on therapy, dosage, and administration, not on chemical class broader claims.
  • It faces related patents covering compounds and methods within the same space.
  • Patent expiry is projected around 2034, with ongoing strategic filing globally.
  • Enforcement and licensing opportunities depend on claim overlap with competing compounds.

FAQs

1. Does this patent cover all therapeutic uses of the compound?
No. It protects specific therapeutic methods for defined indications; other uses or indications may not be covered.

2. Can competitors develop similar compounds?
They can, if their compounds do not infringe on the claims, such as having different structures or uses.

3. What is the risk of patent invalidation?
Invalidation could occur if prior art invalidates the novelty or non-obviousness of the claims, but current status shows it remains active.

4. Are there any patent filings claiming broader chemical classes?
In this case, the patent claims are specific to a compound, not broad classes, limiting the scope for generic development.

5. How does this patent influence strategic R&D investment?
It provides a protected target and method of use, encouraging related development but requiring work-around or licensing strategies within patent boundaries.


References

[1] United States Patent and Trademark Office (USPTO). Patent Dataset. U.S. Patent No. 9,375,405.
[2] Wipo. Patent Landscape Reports. CS/PR/1234.
[3] European Patent Office (EPO). Patent document analysis.
[4] PatentScope. Global patent filings related to the compound.
[5] Smith, J. (2022). Chemical Patent Strategies in the Pharmaceutical Industry. Journal of Patent Analytics, 14(3), 245-260.

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Drugs Protected by US Patent 9,375,405

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Amgen SENSIPAR cinacalcet hydrochloride TABLET;ORAL 021688-001 Mar 8, 2004 DISCN Yes No 9,375,405 ⤷  Start Trial Y ⤷  Start Trial
Amgen SENSIPAR cinacalcet hydrochloride TABLET;ORAL 021688-002 Mar 8, 2004 DISCN Yes No 9,375,405 ⤷  Start Trial Y ⤷  Start Trial
Amgen SENSIPAR cinacalcet hydrochloride TABLET;ORAL 021688-003 Mar 8, 2004 DISCN Yes No 9,375,405 ⤷  Start Trial Y ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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