Last Updated: July 27, 2026

Patent: 10,294,276


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Summary for Patent: 10,294,276
Title:Process for isolation of romidepsin from fermentation broth and preparation of crystals of romidepsin
Abstract:The present invention describes a process for isolation of romidepsin from fermentation broth and preparation of crystals of romidepsin. The process of the invention includes fewer purification steps and provides romidepsin having purity of greater than 99.5% area by HPLC. The process of the invention involves simple purification steps and hence, does not require multiple chromatographic purification steps to achieve desired quality of romidepsin. The process is advantageous over reported processes in terms of 99.5% pure yield, fast process, less expensive and less cumbersome as multiple chromatographic purification is not necessary to achieve desired quality. The process for the preparation of crystals of romidepsin provides advantages like simple steps and involves use of single solvent. The process is advantageous in terms of time, cost, and simplicity.
Inventor(s):Ankur S. Vaid, Anand M. DHIMAN, Traunkant P. SHARMA
Assignee: Concord Biotech Ltd
Application Number:US15/123,295
Patent Claims:see list of patent claims
Patent landscape, scope, and claims summary:

United States Patent 10,294,276: Claims Breakdown and US Patent Landscape—What’s Protected, What’s Contested, and Where Generic Risk Materializes

What does US Patent 10,294,276 claim and which embodiments are covered?

US Patent 10,294,276 is a US utility patent. The claims define the protected subject matter. Without the claim text (independent and dependent claim sets), a faithful “claims breakdown” cannot be produced.

Which independent claims define the core invention in US 10,294,276?

A complete and accurate answer requires the actual independent claim language, including all limitations and any “comprising” vs “consisting of” phrasing.

How broad are the dependent claims and what claim scope do they add?

A complete and accurate answer requires the dependent-claim limitation set (e.g., specific compositions, devices, process steps, parameters, or patient/treatment criteria). Without the claim set, scope mapping to design-arounds cannot be done.

What prior art is most relevant to US 10,294,276, and how is it used against the claims?

A prior-art analysis must cite the patent’s disclosed embodiments, prosecution history (if available), cited references, and any office actions or related litigation record. None of those inputs are available in the prompt.

What patent families cover the same invention as US 10,294,276?

A family analysis requires at least: application publication numbers, priority claims, continuations/divisionals, and INPADOC-style family members. The prompt provides only the US patent number.

Which other US patents are likely to be co-pending or overlapping with US 10,294,276?

An overlapping-landscape assessment requires claim-chart style comparison across likely related US filings, which depends on the claim language of 10,294,276 and the relevant technological domain.

What US patents does 10,294,276 potentially block for generics or biosimilars?

A blocking assessment depends on whether 10,294,276 covers:

  • API composition vs formulation vs method of use vs manufacturing/process steps,
  • a specific dosage form (tablet, capsule, injectable, transdermal),
  • specific patient subgroups or biomarkers,
  • dosing regimen parameters. These must be derived from claim language and specification, which are not provided.

What is the litigation and challenge risk for US 10,294,276?

A critical litigation analysis requires docket-level information: district court, PTAB petitions, reexamination, IPR grounds, settlement agreements, and any assertion/claim constructions. None is provided.

How does US 10,294,276 interact with the Orange Book or FDA exclusivity for a specific product?

Orange Book status analysis requires identifying the drug product linked to the patent (NDA/BLA number) and the Orange Book listing entry for 10,294,276. The prompt does not include the FDA application.

What Paragraph IV challenges could target claims similar to US 10,294,276?

Paragraph IV risk is claim- and product-specific. Without the drug, indication, and patent scope, no accurate “generic entry risks” analysis can be produced.

Which claim elements would be easiest to design around (and which are likely central)?

Design-around analysis requires claim construction: what limitations are “central” vs peripheral, and which depend on structural features or method steps. That cannot be determined without the claim set.

Timeline: when would US 10,294,276 expire and what exclusivity windows could extend protection?

A protection timeline requires the patent’s:

  • filing date (non-provisional utility filing),
  • earliest priority date,
  • patent term adjustment (PTA) and any terminal disclaimers,
  • maintenance status (if available). Those facts are not included in the prompt.

What commercial impact could US 10,294,276 have if asserted in licensing or litigation?

Commercial impact depends on the number of product SKUs implicated, whether it covers manufacturing of the API vs final dosage form, and whether it blocks at-scale supply. None of that can be tied to 10,294,276 without its subject matter.

Key Takeaways

  • US Patent 10,294,276’s claims and patent landscape cannot be analyzed with required precision without the patent’s claim text, publication data, and technology/product mapping.
  • Claim scope, design-around pathways, exclusivity/Orange Book linkage, expiration timing, and litigation risk are all claim-language dependent.

FAQs

  1. What are the independent claim limitations of US 10,294,276?
  2. What dependent claims narrow US 10,294,276 to specific formulations, processes, or treatment regimens?
  3. What is the patent term of US 10,294,276 under US law, including PTA effects?
  4. Is US 10,294,276 listed in the Orange Book for a specific NDA, and what does that listing cover?
  5. What US patents from the same family or common assignee potentially overlap with US 10,294,276?

References

  1. N/A

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Details for Patent 10,294,276

Applicant Tradename Biologic Ingredient Dosage Form BLA Approval Date Patent No. Expiredate
Pfizer Inc. ABRYSVO respiratory syncytial virus vaccine Injection 125769 May 31, 2023 ⤷  Start Trial 2035-03-02
>Applicant >Tradename >Biologic Ingredient >Dosage Form >BLA >Approval Date >Patent No. >Expiredate

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