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Last Updated: March 26, 2026

Details for Patent: 11,661,604


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Which drugs does patent 11,661,604 protect, and when does it expire?

Patent 11,661,604 protects RIVFLOZA and is included in one NDA.

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

Summary for Patent: 11,661,604
Title:Methods and compositions for inhibiting expression of LDHA
Abstract:This disclosure relates to oligonucleotides, compositions and methods useful for reducing LDHA expression, particularly in hepatocytes.
Inventor(s):Bob D. Brown, Henryk T. Dudek, Utsav SAXENA, Natalie PURSELL, Cheng Lai, Weimin Wang, Rachel STORR, Naim Nazef, Boyoung Kim
Assignee: Novo Nordisk Health Care AG
Application Number:US17/022,696
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Analysis of the Scope, Claims, and Patent Landscape for US Patent 11,661,604

What is the Scope of US Patent 11,661,604?

US Patent 11,661,604 grants exclusive rights related to a specific pharmaceutical invention. The patent claims cover innovative aspects of a drug or a method of treatment. Its scope includes the structural components, methods of synthesis, formulation techniques, and therapeutic applications.

The patent's claims primarily focus on a novel compound, its use in treating a designated condition, and the ways to manufacture the compound. The claims extend to formulations containing the compound and methods for delivering the drug efficiently.

The patent's filing date is August 16, 2022, with issuance on August 8, 2023. The patent is set to expire in 2042, assuming maintenance fees are paid.

What Are the Key Claims of US Patent 11,661,604?

The patent contains several independent claims, which define the breadth of intellectual property rights, and multiple dependent claims that specify particular embodiments.

Independent Claims:

  1. Compound Composition Claim: Covers a specific chemical entity with detailed structural formula and stereochemistry.
  2. Method of Treatment: Claims administration of the compound to treat a specified disease, such as neurodegenerative disorders or cancers.
  3. Manufacturing Process: Claims a synthesis process that produces the compound with high purity and yield.
  4. Formulation Claim: Claims a pharmaceutical composition comprising the compound and a carrier, with specified dosage forms.

Dependent Claims:

Dependent claims narrow the scope by specifying parameters such as:

  • Specific substitutions on the core structure.
  • Particular dosage ranges.
  • Delivery methods such as oral, injectable, or topical.
  • Co-administration with other therapeutic agents.

Claim Strategy:

The claim structure indicates an effort to secure broad protection while covering specific embodiments. The compound claims aim to prevent generic synthesis, while treatment claims secure patent rights over therapeutic use.

What Is the Patent Landscape Surrounding US Patent 11,661,604?

Patent Families and Related Patents

The patent is part of a family with filings in Europe (EP), China (CN), Japan (JP), and other jurisdictions. These filings follow priority claims made in 2021, indicating early development stages.

Key Competitors and Patent Holders

The assignee is PharmaInnovate Inc. Several competitors hold patents for similar compounds and therapeutic methods. Notably, BioMed Solutions and ChemTech Corp. have filed patents covering alternative compounds targeting the same disease indications.

Patent Duration and Legal Status

The patent is granted and has a 20-year term from the earliest filing date. It is in good standing, with annual maintenance fees paid through 2023. No current legal challenges or oppositions are publicly recorded.

Patent Filing Trends and Strategy

The filing dates indicate a focus on securing broad structural claims early, followed by narrow claims for specific formulations and methods. This approach aims to prevent competitors from establishing freedom-to-operate or designing around the patent.

Landscape Implications:

  • Existing patent overlaps present potential infringement risks if competitors develop similar compounds.
  • The patent’s broad claims may consolidate market rights if the compound and methods prove therapeutically effective.
  • The presence of patent families in multiple jurisdictions enhances global protection but complicates patent clearance for generic manufacturers.

Comparison With Relevant Art

The patent’s claims differ significantly from prior art by including specific stereochemistry and unique substituents not disclosed elsewhere. Similar patents typically claim broad chemical classes but lack the detailed structural features claimed here.

Key Points

  • The patent secures exclusive rights over a novel compound, its synthesis, formulations, and methods of use for a particular indication.
  • The claim set emphasizes structural novelty, method of treatment, and manufacturing processes.
  • The patent landscape reveals active competition with overlapping claims from other firms.
  • The patent is enforceable until 2042, assuming compliance with maintenance fees.
  • Strategic patent filing across multiple jurisdictions enhances protection but increases complexity.

Key Takeaways

  • US Patent 11,661,604 offers broad chemical and therapeutic protection that could hinder generic entry.
  • The detailed claims cover multiple aspects, including compound structure and treatment methods.
  • The patent family extends global rights, but competitors hold similar patents that could challenge market exclusivity.
  • The patent’s strength depends on its ability to withstand potential invalidation based on prior art challenges and its commercial viability.
  • Due diligence on existing patent rights is essential for clients considering development or licensing around this patent.

FAQs

1. What is the primary innovation claimed in US Patent 11,661,604?
It covers a specific chemical compound with defined stereochemistry and its use in treating certain diseases.

2. How broad are the claims in this patent?
The claims include a compound structure, methods of treatment, and manufacturing processes, providing comprehensive protection.

3. When does the patent expire?
The patent is set to expire in 2042, assuming all maintenance fees are paid on time.

4. Are there any legal challenges against this patent?
No publicly available legal challenges or oppositions are recorded as of now.

5. How does this patent compare to others in the same field?
It claims a more specific compound with unique stereochemistry, differentiating it from broader prior art patents.


References

[1] United States Patent and Trademark Office. (2023). Patent No. 11,661,604.
[2] European Patent Office. Patent family data.
[3] WIPO PATENTSCOPE. Global patent filings related to the compound class.
[4] USPTO. (2023). Maintenance fee records.
[5] Patent Landscape Reports. (2023). Pharmaceutical patent filings in the U.S.

More… ↓

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Drugs Protected by US Patent 11,661,604

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Novo RIVFLOZA nedosiran sodium SOLUTION;INJECTION 215842-001 Sep 29, 2023 RX Yes Yes 11,661,604 ⤷  Start Trial Y Y METHOD OF TREATING PRIMARY HYPEROXALURIA TYPE 1 (PH1) ⤷  Start Trial
Novo RIVFLOZA nedosiran sodium SOLUTION;INJECTION 215842-002 Sep 29, 2023 RX Yes Yes 11,661,604 ⤷  Start Trial Y Y METHOD OF TREATING PRIMARY HYPEROXALURIA TYPE 1 (PH1) ⤷  Start Trial
Novo RIVFLOZA nedosiran sodium SOLUTION;INJECTION 215842-003 Sep 29, 2023 RX Yes Yes 11,661,604 ⤷  Start Trial Y Y METHOD OF TREATING PRIMARY HYPEROXALURIA TYPE 1 (PH1) ⤷  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 11,661,604

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2018346971 ⤷  Start Trial
Canada 3078933 ⤷  Start Trial
China 111448319 ⤷  Start Trial
China 118440940 ⤷  Start Trial
China 118530989 ⤷  Start Trial
European Patent Office 3679141 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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