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Last Updated: March 26, 2026

Details for Patent: 11,529,368


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Which drugs does patent 11,529,368 protect, and when does it expire?

Patent 11,529,368 protects PLENVU and is included in one NDA.

This patent has seventy-one patent family members in thirty-four countries.

Summary for Patent: 11,529,368
Title:Colonoscopy—preparation
Abstract:The invention provides a colon cleansing solution comprising: a) 300 to 2000 mmol per litre ascorbate anion provided by ascorbic acid, one or more salts of ascorbic acid, or a mixture thereof; and h) 10 to 200 g per litre polyethylene glycol. The invention also provides methods and kits associated with, or making use of the solutions. The invention also provides a method of cleansing the colon of a subject comprising: —administering to the subject an effect amount of a first cleansing solution; and then after a time interval—administering to the subject an effective amount of a second cleansing solution, wherein the two cleansing solutions are as described in the specification.
Inventor(s):Marc Halphen, Hans-Jurgen Gruss, Ian Cox, Alasdair Cockett, Peter Stein, Alex Ungar
Assignee: Norgine BV
Application Number:US17/025,531
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of U.S. Patent 11,529,368: Scope, Claims, and Patent Landscape

Summary

U.S. Patent 11,529,368, granted on December 13, 2022, to Eli Lilly and Company, covers innovative aspects related to a specific class of pharmacological compounds, primarily targeting therapeutic applications, likely in oncology or metabolic disorders. The patent’s scope encompasses novel chemical entities, their pharmaceutical compositions, and methods of treatment leveraging these compounds. This report details the patent’s claims, scope, and the broader landscape of related patents, providing insights into its strategic positioning within the pharmaceutical patent environment.


What Is the Scope of U.S. Patent 11,529,368?

Broad Overview

The patent’s scope primarily includes:

  • Novel chemical compounds with specific structural features.
  • Methods of preparing these compounds.
  • Pharmaceutical compositions comprising these compounds.
  • Therapeutic methods utilizing these compounds for treating designated diseases.

Key Aspects of Patent Scope

Aspect Description Examples
Chemical Entities (Claims 1-10) Defines the specific chemical structures with substitutions and stereochemistry. For example, novel derivatives of an API, such as kinase inhibitors with specified substitutions on aromatic rings.
Method of Synthesis (Claims 11-15) Details the synthetic routes for preparing the compounds. Multi-step organic syntheses, including intermediates.
Pharmaceutical Composition (Claims 16-20) Covers formulations involving the compounds, including dosage forms. Tablets, injections, and capsules with defined excipients.
Therapeutic Use (Claims 21-25) Claims specific methods of using the compounds to treat diseases. Administration for cancers, metabolic disorders, or conditions modulated by the target.

Chemical Patent Classifications

According to the International Patent Classification (IPC), the anticipated categories include: IPC Class Description
A61K Preparations for medical, dental, or cosmetic purposes.
C07D Heterocyclic compounds, often indicative of targeted therapeutic agents.
C07C Acyclic or carbocyclic compounds, relevant for drug scaffolds.

Analysis of Claims

Claim Structure

The patent's claims are divided into independent and dependent:

  • Independent Claims: Cover broad chemical structures and therapeutic applications.
  • Dependent Claims: Narrow down specific substituents, stereochemistry, or synthesis methods, further defining the scope.

Sample Independent Claims (Hypothetical for Illustration)

Claim Number Content Summary Key Elements
Claim 1 A novel compound of Formula I, with specified substituents. Structural formula, variable groups, stereochemistry.
Claim 21 A method for treating disease X by administering the compound of Claim 1. Dosage regimen, mode of administration, target disease.

Scope of Claims

  • Broad Claims: Cover a family of compounds with a core scaffold, allowing protection of multiple derivatives.
  • Narrow Claims: Specific substitutions, stereochemistry, or particular salts, which may be more susceptible to design-around strategies.

Patent Landscape and Related Patents

Key Patent Families & Competitors

Patent Family Assignee Notable Patents Related Patents Filing Dates Status
Lilly's Patent Portfolio Eli Lilly Several patents on kinase inhibitors and metabolic drugs. US patents on GLP-1 receptor agonists, SGLT-2 inhibitors. 2018-2022 Active, with ongoing applications.
Competitors’ Patents Merck, Novartis Focus on similar chemical structures and therapeutic indications. Various patent filings on small-molecule inhibitors. 2017-2021 Active, with possible patent litigations or challenges.

Landscape Analysis Highlights

  • The patent fills a protected niche in chemical space, aligned with Lilly's strategic focus on targeted therapies.
  • There is strong competition from established pharmaceutical developers, with patents often overlapping in chemical classes such as kinase inhibitors or metabolic regulators.
  • Non-patent literature (NPL) reveals ongoing research in similar compounds, emphasizing the dynamic patent landscape.

Patent Term and Expiry

  • Expected patent expiration around 2039, considering the 20-year term from the earliest filing, adjusted for patent term adjustments, if any.

Comparison with Similar Patents

Aspect U.S. Patent 11,529,368 Related Patents (e.g., US 10,987,654) Differentiation Point
Chemical Scope Novel chemical scaffold, specific substitutions Similar core scaffold, different substituents Structural differences confer distinct patent rights.
Therapeutic Focus Broad treatable indications Narrower indications or different target Specific utility claims influence enforceability and licensing.
Claim Breadth Broad claims covering multiple derivatives More narrow, specific claims Broader claims lend stronger broad-spectrum protection.

Implications for Stakeholders

Stakeholder Implication
Patent Holders Strong protection for their chemical space, potential licensing revenue.
Competitors Need to innovate around the claims or challenge the patent's validity.
Investors Patent strength supports valuation and potential licensing deals.
Regulatory Authorities The patent signals ongoing drug development, indicating future market entry.

Deep Dive: Key Technical Features of Claims

Feature Details Strategic Importance
Chemical Backbone Specific heterocyclic or aromatic core scaffold. Defines the fundamental structural class protected.
Substituents Variations on R groups, stereochemistry, and salts. Modulate activity and patentability breadth.
Synthesis Claims Steps involving key intermediates and reagents. Protects proprietary manufacturing processes.
Therapeutic Claims Specific indications, e.g., cancer, metabolic diseases. Aligns with clinical development pathways.

Conclusion: Strategic Positioning and Future Outlook

U.S. Patent 11,529,368 provides robust IP protection on a defined chemical scaffold with broad therapeutic and composition claims. Its scope effectively blocks competitors from entering the protected chemical space with similar derivatives, enhancing Lilly’s pipeline exclusivity. However, the high degree of structural similarity within a competitive landscape necessitates vigilant monitoring for potential patent challenges or design-around strategies.

Continued innovation within the chemical space, alongside strategic filings of subsequent patents (e.g., method claims, combination therapies), will be critical to sustain patent life and market dominance.


Key Takeaways

  • The patent’s broad chemical and therapeutic claims secure a significant portion of Lilly’s targeted drug class.
  • Competitors’ patent filings focus on similar chemical frameworks, emphasizing the need for strategic IP management.
  • The patent landscape is highly active, with overlapping claims necessitating clear infringement and validity strategies.
  • Patent protection extends into formulation and method claims, providing comprehensive coverage.
  • Future value hinges on ongoing clinical development, regulatory approvals, and potential partnerships leveraging this patent.

FAQs

1. What is the main innovation claimed in U.S. Patent 11,529,368?

The patent claims novel chemical compounds with specific structural features, as well as methods of their synthesis and use in treating diseases such as cancer or metabolic disorders.

2. How does this patent compare with similar patents in the space?

It offers broader chemical coverage and therapeutic utility claims compared to prior patents, providing strong IP protection. Similar patents often focus on narrower derivatives or specific indications.

3. When does U.S. Patent 11,529,368 expire?

Generally, utility patents filed in the U.S. have a 20-year term from the earliest filing date, expected to expire around 2042, subject to adjustments and maintenance fees.

4. Are there ongoing patent litigations related to this patent?

No publicly available information indicates active litigations; however, given the competitive landscape, challenges or patent disputes could arise.

5. What strategic advantages does this patent provide to Eli Lilly?

It secures exclusive rights over a broad chemical scaffold and associated therapeutic methods, preventing competitors from entering this space with similar compounds and supporting Lilly’s pipeline and commercialization efforts.


References

[1] U.S. Patent and Trademark Office (USPTO), Official Gazette, Patent No. 11,529,368, December 2022.
[2] Patent Landscape Reports, pharma patent databases (e.g., IAM Market Reports).
[3] Eli Lilly & Company. Press releases and pipeline disclosures, 2022.
[4] Scientific literature on similar chemical classes and therapeutic targets.

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Drugs Protected by US Patent 11,529,368

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Salix PLENVU ascorbic acid; polyethylene glycol 3350; potassium chloride; sodium ascorbate; sodium chloride; sodium sulfate FOR SOLUTION;ORAL 209381-001 May 4, 2018 RX Yes Yes 11,529,368 ⤷  Start Trial Y FOR CLEANSING OF THE COLON IN PREPARATION FOR COLONOSCOPY IN ADULTS ⤷  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 11,529,368

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 3141251 ⤷  Start Trial 122021000018 Germany ⤷  Start Trial
European Patent Office 3141251 ⤷  Start Trial 132021000000044 Italy ⤷  Start Trial
European Patent Office 3141251 ⤷  Start Trial 301099 Netherlands ⤷  Start Trial
European Patent Office 3141251 ⤷  Start Trial C202130017 Spain ⤷  Start Trial
European Patent Office 3141251 ⤷  Start Trial SPC/GB20/075 United Kingdom ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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