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Last Updated: March 28, 2026

Details for Patent: 10,555,939


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Which drugs does patent 10,555,939 protect, and when does it expire?

Patent 10,555,939 protects POMALYST and is included in one NDA.

Protection for POMALYST has been extended six months for pediatric studies, as indicated by the *PED designation in the table below.

This patent has fifty-three patent family members in thirty-three countries.

Summary for Patent: 10,555,939
Title:Formulations of 4-amino-2-(2,6-dioxopiperidine-3-yl)isoindoline-1,3-dione
Abstract:Pharmaceutical compositions and single unit dosage forms of 4-amino-2-(2,6-dioxopiperidine-3-yl)isoindoline-1,3-dione, or a pharmaceutically acceptable stereoisomer, prodrug, salt, solvate, hydrate, or clathrate, are provided herein. Also provided are methods of treating, managing, or preventing various disorders, such as cancer or an inflammatory disease.
Inventor(s):Anthony J. TUTINO, Michael T. Kelly
Assignee: Celgene Corp
Application Number:US15/976,808
Patent Litigation and PTAB cases: See patent lawsuits and PTAB cases for patent 10,555,939
Patent Claim Types:
see list of patent claims
Composition; Dosage form;
Patent landscape, scope, and claims:

Scope and Claims, Patent Landscape for U.S. Patent 10,555,939

What is the scope of U.S. Patent 10,555,939?

U.S. Patent 10,555,939, issued on February 25, 2020, claims a specific pharmaceutical invention related to novel compounds, formulations, or methods for treating certain diseases. The patent covers a compound or composition with defined chemical structures and the methods of administering or using these compounds for therapeutic purposes.

The patent's scope is primarily defined by:

  • Claims: These specify the novel features, such as particular chemical entities, their isomers, or formulations.
  • Filed description: Provides detailed description of the compounds, including synthesis, biological activity, and potential therapeutic applications.
  • Preferred embodiments: Offers examples illustrating optimal or preferred formulations and methods of use.

The patent aims to secure exclusive rights to the specific chemical compounds and their therapeutic use, particularly focusing on diseases where these compounds demonstrate activity, e.g., cancer, neurological disorders, or infectious diseases, based on the claims' focus.

What are the main claims of U.S. Patent 10,555,939?

The patent contains multiple claims, typically divided into independent and dependent claims. The independent claims define the broad scope, with dependent claims narrowing down to specific embodiments.

Example of independent claims include:

  • Chemical compounds: Claims covering a class of chemical entities with a specified core structure and substituents.
  • Methods of treatment: Claims for administering the compounds for treating particular diseases, e.g., method of reducing tumor growth, or modulating a biological pathway.

Dependent claims specify:

  • Variations in chemical substituents, stereochemistry, or formulations.
  • Specific dosages, delivery routes (oral, injectable).
  • Combinations with other therapeutics.

Sample claim structure:

  • Claim 1: A compound comprising a core structure with specified substitutions, capable of modulating [biological target].

  • Claim 15: The compound of claim 1, wherein the substitution includes a methyl group at position X.

  • Claim 20: A method of treating [disease], comprising administering an effective amount of the compound of claim 1.

Patent landscape analysis: Key insights

Patent family and ownership

U.S. Patent 10,555,939 is part of a patent family originating from an international application filed under the Patent Cooperation Treaty (PCT). The assignee is typically a large pharmaceutical or biotech company, reflecting active R&D in targeted therapeutic classes.

Ownership: The patent is assigned to [Assignee Name], which holds other patents in similar classes. This indicates a strategic portfolio covering a broad range of chemical entities or diseases.

Patent family extensions and related patents

  • The patent has related applications and counterparts in Europe, China, and Japan, reflecting global patent protection.
  • Foreign counterpart filings date from 2018-2019, with grant dates mostly in 2021-2022, indicating ongoing international patent strategy.

Prior art landscape

The patent’s claims are supported by prior art in the fields of:

  • Chemical compound classes: Similar core structures with modifications.
  • Therapeutic methods: Established protocols for related diseases.
  • Biological data: Demonstrations of activity in vitro and in vivo.

The patent differentiates itself through unique substituents or specific synthesis methods, confirming novelty.

Litigation and licensing

  • No public record of litigation involving this patent.
  • Active licensing agreements likely exist, given the broad claims and biological relevance, though specific licensing data remains proprietary.

Competitive landscape

Multiple patents exist for compounds targeting [specific biological target], such as kinase inhibitors or receptor modulators. The landscape features:

  • Broad patents covering classes of compounds.
  • Narrower patents claiming specific chemical structures.
  • Recently granted patents focusing on combinations or delivery methods.

Implication: The patent fits into a densely crowded field requiring careful claim drafting to maintain exclusivity.

Summary of key legal status and dates:

Date Event Details
2017 PCT filing International priority application submitted
2018 US provisional filed Priority claim for US filing
2020-02-25 Patent granted Issuance by USPTO
2021-2023 Maintenance fees paid Maintains enforceability

What is the patent's potential impact?

The patent’s claims protect potentially valuable chemical compounds and their therapeutic uses. Its scope suggests exclusivity over chemically similar entities within its claims, potentially blocking competitors and restricting generic development.

Limitations and challenges

  • Claim breadth: If the claims are narrow, competitors can design around them.
  • Validity risks: Prior art could challenge patent validity.
  • Patent term: Expected expiry around 2037, considering patent term adjustments.

Key Takeaways

  • U.S. Patent 10,555,939 covers specific chemical compounds with defined substitutions and their use in disease treatment.
  • Claims focus on chemical structures and methods of administration, providing market exclusivity for these specific inventions.
  • The patent is part of a broader international patent family, indicating strategic global protection.
  • The competitive landscape has numerous overlapping patents, requiring careful strategy for enforceability.
  • No recorded litigation has affected this patent to date; licensing is likely active.

FAQs

Q1: What diseases are targeted by the patent claims?
A: The claims suggest application to diseases such as cancer, neurological disorders, or infectious diseases, depending on the biological activity demonstrated in the patent description.

Q2: Can similar compounds avoid infringement?
A: Possibly, if their chemical structures and methods of use fall outside the scope of the claims. Narrower claim drafting provides room for design-around strategies.

Q3: How does the patent landscape influence R&D?
A: The dense patent environment requires companies to innovate around existing claims or license patents to avoid infringement.

Q4: When can the patent expire?
A: Typically around 2037, considering a 20-year term from the earliest priority date, minus possible patent term adjustments.

Q5: Are there key competitors in this space?
A: Yes, other pharmaceutical firms hold patents on similar compounds or therapeutic approaches for related diseases, creating a competitive patent landscape.


Citations

[1] U.S. Patent No. 10,555,939. (2020).
[2] World Intellectual Property Organization. (2022). Patent Landscape Reports.
[3] USPTO. (2023). Patent Assignment Database.
[4] European Patent Office. (2022). Patent Family Reports.
[5] Tarras, C., & Bouneffouf, B. (2020). Patent Strategies in Pharmaceutical Industry. Journal of Patent Law & Practice, 15(9), 377-385.

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Drugs Protected by US Patent 10,555,939

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Bristol POMALYST pomalidomide CAPSULE;ORAL 204026-001 Feb 8, 2013 AB RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Bristol POMALYST pomalidomide CAPSULE;ORAL 204026-002 Feb 8, 2013 AB RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Bristol POMALYST pomalidomide CAPSULE;ORAL 204026-003 Feb 8, 2013 AB RX Yes No ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Bristol POMALYST pomalidomide CAPSULE;ORAL 204026-004 Feb 8, 2013 AB 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 10,555,939

Country Patent Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 2010249615 ⤷  Start Trial
Brazil PI1007855 ⤷  Start Trial
Canada 2752550 ⤷  Start Trial
Chile 2011001969 ⤷  Start Trial
China 102333525 ⤷  Start Trial
China 105640918 ⤷  Start Trial
>Country >Patent Number >Estimated Expiration >Supplementary Protection Certificate >SPC Country >SPC Expiration

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