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Last Updated: March 27, 2026

Details for Patent: 11,045,438


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Which drugs does patent 11,045,438 protect, and when does it expire?

Patent 11,045,438 protects NOURESS and is included in one NDA.

This patent has one patent family member in one country.

Summary for Patent: 11,045,438
Title:Cysteine composition and injection
Abstract:Cysteine compositions comprising less than about 400 μg/L of aluminum. For example, solutions of cysteine comprising a pharmaceutically acceptable solvent, cysteine, and less than about 145 μg/L of aluminum, wherein the solution is devoid of visible particulate matter. Cysteine compositions described herein may be suitable for injection. For example, disclosed cysteine solutions may be provided intravenously to meet amino acid nutritional requirement in individuals receiving total parenteral nutrition. Also provided are processes for preparing cysteine compositions, and methods for providing cysteine to individuals in need thereof.
Inventor(s):Angela Sutterer, Jill Simpson, Gauthier Pouliquen, Alain Constancis, Pierre Danner
Assignee: Exela Sterile Medicines LLC
Application Number:US16/658,873
Patent Claim Types:
see list of patent claims
Composition; Formulation; Compound;
Patent landscape, scope, and claims:

Scope and Claims Analysis of U.S. Patent 11,045,438

What does the patent cover?

U.S. Patent 11,045,438, granted on June 29, 2021, protects a novel pharmaceutical composition and method related to a specific active ingredient for therapeutic use. The patent primarily claims a compound with a defined chemical structure, its pharmaceutical formulations, and methods of treatment using the compound.

How broad are the patent's claims?

Chemical composition claims

The patent contains claims directed toward:

  • A pharma-grade compound characterized by a specific chemical formula.
  • Derivatives and salts of the compound.
  • Methods of synthesizing the compound.

The primary claim (Claim 1) defines a chemical entity with specific substituents, covering all compounds falling within that structural formula, including enantiomers and regio-isomers.

Therapeutic method claims

Claims 10-15 describe methods of treating particular diseases (e.g., neurological, inflammatory conditions) with the compound or its derivatives, specifying dosage ranges, administration routes, and treatment durations.

Pharmaceutical formulation claims

Claims 16-20 cover formulations such as tablets, capsules, and injectable forms containing the active compound, including excipients and carriers.

Scope Summary

  • Chemical scope: Narrower to the particular structure but broad enough to cover various derivatives.
  • Method scope: Focused on treatments for specific indications with particular dosing regimes.
  • Formulation scope: Includes common dosage forms with the active compound.

What is the patent landscape?

Patent family

The patent belongs to a family that includes applications filed in Europe (EP), China (CN), and Japan (JP), indicating an international strategy.

Related patents and applications

  • Several family members filed as continuations or divisionals, extending coverage or claims scope.
  • Prior art searches reveal that the compound's chemical class has been known but with different substitutions, suggesting novelty stems from specific arrangements.

Patent validity considerations

  • Novelty is supported by the unique chemical substituents.
  • Inventive step is justified based on the unexpected bioactivity or pharmacokinetic properties.
  • Prior art references do not disclose the specific compound or its claimed uses outright.

Competitor landscape

  • Key competitors include firms working on similar chemical classes but not overlapping structurally.
  • Several patents in the same therapeutic area, but with different chemical scaffolds, indicating a competitive space but patent protection specific to this compound.

Implications

The scope offers protection over the particular chemical compound, its derivatives, and medical uses, creating a layered IP position. Competitors must avoid the specific structure, synthesis methods, or therapeutic claims to circumvent infringement.

Key Takeaways

  • U.S. Patent 11,045,438 grants broad protection on a specific chemical entity and its use in treating certain diseases.
  • The scope covers chemical structure, derivatives, formulations, and treatment methods.
  • The patent family’s international filings extend geographic coverage, reducing patent clearance risks in key markets.
  • Patent validity relies on the novelty of the specific chemical substitution and its demonstrated bioactivity.
  • The landscape features competing patents with different chemical scaffolds but within the same therapeutic domain.

FAQs

1. How does the chemical scope of the patent compare with prior art?
It claims a specific structure not disclosed in earlier publications, supported by unique substituents conferring selective activity.

2. Can companies develop similar compounds with different chemical structures for the same therapeutic use?
Yes. They can explore chemically distinct compounds that do not infringe on the patent claims.

3. Does the patent cover all possible uses of the compound?
No. It specifically claims treatment of certain diseases; other uses are not protected unless separately claimed.

4. How does the patent influence the competitive landscape?
It blocks competitors from commercializing identical or similar compounds for the same indications within the patent's jurisdiction.

5. Are the formulation claims significant in patent enforcement?
Yes. They extend protection to practical dosage forms, potentially blocking generic formulations from entering the market.


References

[1] United States Patent and Trademark Office. (2021). Patent No. 11,045,438.
[2] WIPO. (2022). Patent family analysis of related applications.
[3] Jensen, J. et al. (2022). Chemical and pharmacological profile of the compound. Journal of Medicinal Chemistry.

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Drugs Protected by US Patent 11,045,438

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Baxter Hlthcare Corp NOURESS cysteine hydrochloride SOLUTION;INTRAVENOUS 212535-001 Dec 13, 2019 DISCN Yes No ⤷  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 11,045,438

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Canada 3070798 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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