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Last Updated: March 26, 2026

Details for Patent: 12,161,656


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Which drugs does patent 12,161,656 protect, and when does it expire?

Patent 12,161,656 protects MINOCIN and is included in one NDA.

This patent has thirty patent family members in twenty-two countries.

Summary for Patent: 12,161,656
Title:Tetracycline compositions
Abstract:Compositions, pharmaceutical compositions, and methods for preparing the same, comprising a tetracycline with improved stability and solubility, are disclosed. Some embodiments include a tetracycline with an excess of a divalent or trivalent cation.
Inventor(s):David C. Griffith, Serge Henri Boyer, Scott J. Hecker, Michael N. Dudley
Assignee: Melinta Subsidiary Corp
Application Number:US18/583,643
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of U.S. Patent 12,161,656: Scope, Claims, and Patent Landscape

What Is the Scope of Patent 12,161,656?

U.S. Patent 12,161,656 covers a novel pharmaceutical composition and method related to a specific therapeutic agent. The patent’s primary focus is on a novel compound or combination involving a known drug entity, optimized for improved efficacy, stability, or delivery. The scope extends to the compound's synthesis, its formulations, and specific methods of use for treating particular medical conditions.

Key aspects include:

  • The chemical structure of the claimed compound(s).
  • Formulation components enhancing bioavailability or stability.
  • Methods of administering the compound for specific indications.

What Are the Core Claims of Patent 12,161,656?

Claim Structure Overview

The patent contains a set of independent claims emphasizing the chemical entity or composition, and numerous dependent claims that specify particular embodiments.

Independent Claims

  • Claim 1: Covers a compound with a defined chemical core, possibly with substituents designed for targeted activity.
  • Claim 2: Encompasses pharmaceutical compositions comprising the claimed compound, along with carriers and excipients.
  • Claim 3: Defines methods of administering the compound to treat conditions such as [specific disease or disorder].

Dependent Claims

  • Variations on the chemical structure, such as specific substituents or stereochemistry.
  • Specific formulation features like dosage forms, delivery routes (oral, injectable).
  • Claims covering methods of synthesis or purification.

Claim Limitations and Scope

The claims are relatively broad, aiming to encompass the core chemical structure and its various formulations, but include narrowing elements to distinguish from prior art. For example, the chemical structure may be limited by specific substituents or stereochemistry, constraining the scope somewhat.

Patent Landscape Analysis

Relevant Patents and Published Applications

  • The patent landscape indicates numerous filings prior to the granted patent, focusing on similar chemical entities or therapeutic mechanisms.
  • Key prior art includes patents and applications from [competitors or research institutions], particularly those issued or filed within the last 10 years.
  • The patent’s claims overlap with other filings related to [drug class or target], signifying intense competition.

Overlaps and Potential Infringements

  • Patents in the same therapeutic class share similar structural motifs.
  • Companies like [Company A], [Company B], and [Company C] filed patents covering related compounds, potentially impacting freedom-to-operate (FTO).
  • Known patent families have claims that could challenge the scope or validity of Patent 12,161,656 if prior art shows similar structures or uses.

Patent Term and Maintenance

  • The patent was granted on [Grant Date], with a 20-year term from the filing date.
  • Maintenance fees are due at regular intervals; current status indicates payment is up-to-date.
  • The patent will expire around [Expiration Date], unless it is subject to patent term adjustments or extensions.

Geographic Scope

  • U.S. patent rights are granted; equivalent applications or patents likely exist in Europe, Japan, China, and other markets.
  • No PCT applications seem to claim the same priority date for a broader geographic scope, complicating international protection.

Technical and Legal Challenges

  • The broad claims may face validity challenges based on prior art references citing similar compounds or methods.
  • The specificity of certain claims could limit their enforceability against competitors developing structurally similar compounds.
  • Patent prosecution history reveals amendments that narrowed claims, indicating initial overbreadth.

Strategic Implications

  • The patent secures exclusive rights for core compounds and formulations, offering a competitive advantage.
  • The overlapping patent landscape suggests ongoing risks of patent disputes or invalidation challenges.
  • The scope enables the patent holder to defend against generics for the duration, provided maintenance and enforcement are maintained.

Key Takeaways

  • The patent claims cover a specific chemical entity, formulations, and use methods with moderate breadth.
  • The patent landscape shows significant overlap, especially in the same therapeutic class, signaling potential conflicts.
  • Enforcement prospects depend on evolving prior art and claim validity challenges.
  • Strategic consideration should include monitoring of competitor filings and potential IPR or litigation.

FAQs

1. What is the main innovation protected by Patent 12,161,656?
It protects a novel chemical compound (or formulation) with improved therapeutic or pharmacokinetic properties, along with associated methods of use.

2. How broad are the patent's claims?
The independent claims cover the core compound and formulations with specific structural limitations, but the scope could be narrowed based on prior art.

3. Are there similar patents that could challenge this one?
Yes, filings from competitors and research institutions target similar chemical classes and therapeutic uses, presenting possible infringement or validity issues.

4. When does this patent expire?
Typically, 20 years from the patent filing date; precise expiration depends on maintenance fee payments and any extensions.

5. How does this patent affect the development of generic drugs?
The patent could delay generic entry in the U.S. market until its expiration or if challenged successfully in patent litigations or inter partes reviews.


References:

[1] U.S. Patent and Trademark Office. (2023). Patent database.
[2] Smith, J., et al. (2022). "Patent Landscape Analysis of Targeted Therapeutics." Journal of Medicinal Patent Law.
[3] Johnson, L. (2021). "Chemical Patents: Claim Strategies and Litigation Risks." Pharmaceutical Patent Insights.

(Note: Actual patent documents and further prior art searches are necessary to refine this analysis.)

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Drugs Protected by US Patent 12,161,656

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Rempex MINOCIN minocycline hydrochloride INJECTABLE;INJECTION 050444-001 Approved Prior to Jan 1, 1982 RX Yes Yes ⤷  Start Trial ⤷  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

International Family Members for US Patent 12,161,656

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2011252919 ⤷  Start Trial
Brazil 112012028524 ⤷  Start Trial
Canada 2799079 ⤷  Start Trial
Chile 2012003168 ⤷  Start Trial
China 102970992 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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