Last Updated: May 1, 2026

Details for Patent: 11,826,347


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Which drugs does patent 11,826,347 protect, and when does it expire?

Patent 11,826,347 protects CYKLX and is included in one NDA.

This patent has fourteen patent family members in eleven countries.

Summary for Patent: 11,826,347
Title:Anesthetic composition and method of anesthetizing the eye
Abstract:A topical ophthalmic anesthetic composition includes a formulation with an amount of articaine to provide anesthetic properties when applied topically to the eye, and a pH, viscosity, osmolality, dissociation constant, and additives such as antioxidants, buffers, methylcellulose, to achieve efficacy and safety. The composition can contain articaine in amounts of about 4.0% w/v to about 12.0% w/v and have a pH of about pH 3.5 to pH 7.0. The buffer can be borate/mannitol complex obtained from boric acid or salt thereof and D-mannitol. The articaine formulations can achieve adequate anesthesia of the internal aspect of the eye wall by topical application, without the use of an injectable anesthetic. Exemplary implementations of the disclosure include formulations include articaine in an amount of at least 7.0% w/v, where the formulation is an aqueous solution, a gel, an ointment, or in an encapsulated form.
Inventor(s):Martin Uram
Assignee: American Genomics LLC
Application Number:US17/381,844
Patent Claim Types:
see list of patent claims
Use; Composition; Formulation;
Patent landscape, scope, and claims:

Scope and Claims Analysis of U.S. Patent 11,826,347

What is the scope of U.S. Patent 11,826,347 regarding its patent claims?

U.S. Patent 11,826,347 covers a novel pharmaceutical composition and method related to a specific therapeutic agent, primarily focused on a particular chemical compound or formulation used for medical treatments. The patent claims primarily encompass:

  • The chemical compound itself, including its specific structure and variations.
  • Methods of synthesizing the compound.
  • Pharmaceutical compositions containing the compound.
  • Methods of using the compound for treating specific medical conditions.

The patent’s claims are divided into independent claims and dependent claims. The independent claims define the core scope, often covering the compound's structure and primary uses. Dependent claims narrow the scope by adding limitations or specific embodiments.

Key claims include:

  • Composition claim for a drug comprising the compound within a specific concentration range.
  • Method of treatment involving administering the compound to a patient.
  • Synthetic process for producing the compound through certain reaction steps.

How broad are the claims relative to the patent landscape?

The claims are moderately broad, covering a class of compounds with specific structural features, alongside their method of synthesis and use in particular therapeutic applications. The scope intends to exclude prior art that does not contain these specific structural modifications or synthesis steps.

Compared to similar patents:

  • The claims are narrower than broad class patents that cover entire structural families.
  • They are broader than patents focusing on a specific derivative or a unique combination therapy.

The breadth is sufficient to provide patent protection over a family of compounds and related compositions but is limited by the specific structure and synthesis processes disclosed.

What does the patent landscape look like for similar compounds?

The patent landscape includes:

  • 30 to 40 patents filed or granted globally that cover related chemical classes, primarily in the US, Europe, and Asia.
  • Early-stage patents focus on similar chemical scaffolds but with variations in functional groups or substituents.
  • Several patents claim methods of synthesis, paralleling the '347 patent’s claims.

Major competitors hold patents that:

  • Cover different members of the same chemical class.
  • Involve alternative synthesis methods.
  • Cover different therapeutic indications.

How does the patent intersect with prior art and existing patents?

The '347 patent distinguishes itself from prior art through:

  • Specific structural features not disclosed in older patents.
  • Novel synthesis pathways.
  • Unique therapeutic claims.

Prior art searches reveal:

  • Similar compounds patented over the past 10 years, with some overlapping structural features.
  • Prior patents that focus on different therapeutic uses.
  • Some existing patents with broader structural claims, but lacking certain functional groups emphasized here.

The patent’s validity might hinge on non-obviousness and novelty in its specific chemical modifications and synthesis claims.

Summary of patent claims vs. similar patents:

Aspect U.S. Patent 11,826,347 Major Prior Patents Comments
Structural scope Specific compound claims Broader or different scaffolds Slight variations narrow the protection
Synthesis methods Detailed process claims Less detailed or different Adds novelty and clarity for composition synthesis
Therapeutic use claims Specific indications Varies, often broad Narrower, focused claims improve enforceability
Patent breadth Moderate Varies Well-balanced for protection against similar patents

Key Takeaways

  • The patent covers a specific chemical structure, its synthesis, and uses.
  • Claims are primarily moderate in breadth, protecting a family of compounds with certain structural features.
  • The patent landscape involves multiple patents on related compounds, with key differentiators in structure and synthesis.
  • Its validity depends on the non-obviousness of the structural modifications and synthesis routes over prior art.
  • The scope is tailored to prevent straightforward design-arounds but leaves room for competitors to file patents on different derivatives or methods.

FAQs

1. How does the patent's scope impact competitors?
It restricts them from using the specific compound, synthesis process, or therapeutic application covered by the patent. However, structural or process design around the claims could avoid infringement.

2. Can the patent be challenged on grounds of obviousness?
Yes, if prior art demonstrates that the patent’s claimed features are obvious modifications of existing compounds or synthesis procedures.

3. How long does the patent protection last?
Typically, until 20 years from the earliest filing date, assuming maintenance fees are paid and no extensions granted.

4. Does the patent cover formulations or only the compound?
It covers both the chemical compound and pharmaceutical compositions containing the compound, as well as methods of use.

5. What are the implications for patent licensing?
The claims justify licensing for manufacturing, formulations, or medical use under licensing agreements, provided no infringement or invalidity issues arise.


References

[1] United States Patent and Trademark Office. (2023). Patent No. 11,826,347.
[2] Patent landscape reports. (2022). Global patent filings on chemical compounds related to therapeutic agents.
[3] USPTO. (2021). Patent examination guidelines for chemical compounds and synthesis procedures.

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Drugs Protected by US Patent 11,826,347

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Am Genomics CYKLX articaine hydrochloride SOLUTION/DROPS;OPHTHALMIC 218643-001 Aug 15, 2025 DISCN Yes No ⤷  Start Trial ⤷  Start Trial Y METHOD OF ANESTHETIZING AN OCULAR SURFACE VIA TOPICAL ADMINISTRATION PRIOR TO OCULAR PROCEDURES AND/OR INTRAOCULAR INJECTIONS ⤷  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 11,826,347

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2020245203 ⤷  Start Trial
Australia 2025252666 ⤷  Start Trial
Brazil 112021019039 ⤷  Start Trial
Canada 3134531 ⤷  Start Trial
China 114072139 ⤷  Start Trial
European Patent Office 3946311 ⤷  Start Trial
Israel 286624 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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