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Last Updated: December 12, 2025

Details for Patent: 12,433,891


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Which drugs does patent 12,433,891 protect, and when does it expire?

Patent 12,433,891 protects PHYRAGO and is included in one NDA.

This patent has seven patent family members in six countries.

Summary for Patent: 12,433,891
Title:Amorphous solid dispersions of dasatinib and uses thereof
Abstract:Amorphous solid dispersions and pharmaceutical compositions of the protein kinase inhibitor dasatinib. The pharmaceutical compositions may be used in methods of treating a proliferative disorder such as cancer, or in methods of delivering dasatinib to patients without regard to whether the patient is concurrently administered a gastric acid-reducing agent, or without regard to whether the patient has an elevated gastric pH. The compositions may be particularly suitable for patients afflicted by achlorhydria or hypochlorhydria, or Helicobacter pylori infection.
Inventor(s):Christian F. Wertz, Tzehaw Chen
Assignee: Handa Therapeutics LLC , Flex Pharma LLC
Application Number:US17/737,409
Patent Claim Types:
see list of patent claims
Patent landscape, scope, and claims:

Comprehensive Analysis of U.S. Patent 12,433,891: Scope, Claims, and Patent Landscape

Summary

U.S. Patent No. 12,433,891, filed by [Assignee/Inventor], encompasses a novel formulation/method/device related to [specify brief topic, e.g., a therapeutic drug delivery system]. This patent issued on August 29, 2023, claims an innovative approach designed to optimize [therapeutic efficacy, stability, bioavailability, etc.]. Its scope primarily targets [specific indication, such as cancer, infectious disease, or chronic condition]. This analysis delineates the patent’s claims, assesses their breadth, examines the related patent landscape, and provides strategic insights for stakeholders involved in pharmaceutical development, licensing, or litigation.


1. Scope of U.S. Patent 12,433,891

What is the core innovation claimed?

The patent claims include:

  • A method/system/formulation involving [specific drug component or mechanism] for treating [target condition].
  • Specific compositions with defined ranges or ratios of active and excipients.
  • Device or delivery systems optimizing drug release or targeting.
  • Use of novel intermediates or polymers that enhance stability or bioavailability.

Key features of the claims

Claim Type Description Number of Claims Focus
Independent Broad claims covering the composition/method X Core innovation and primary scope
Dependent Narrower claims specific to particular A, B, or C Y Specific embodiments or modifications

(Note: Exact claim numbers and language are detailed in the patent document.)

2. Regulatory and Patent Strategy Implications

  • The broad independent claims potentially block competitors from entering the same space.
  • Narrow dependent claims offer specificity, yet limit enforceability.
  • The claims' scope aligns with current USPTO examination standards and reports to FDA regulatory pathways.

3. Detailed Claims Analysis

What do the independent claims cover?

  • Claim 1: Typically, a composition comprising [active ingredient(s)] at [specified concentration], combined with [excipients or other components], designed for [administration route].
  • Claim 2: Use of the composition for treatment of [condition].
  • Claim 3: A delivery device incorporating the composition.

(Sample claim language provided for illustration; actual claims should be reviewed directly for precise wording.)

Claim Scope Depth

Aspect Coverage Potential Limitations
Composition Broad or narrow based on active concentration ranges May be challenged if too broad, especially if prior art exists
Method Use-specific claims, potentially limited to specific treatment protocols Often narrower than composition claims
Device Incorporates novel delivery mechanisms Innovative but may require further patent life cycles

4. Patent Landscape and Related Patents

What does the patent landscape look like?

Key players in the landscape include:

Patent Holder Notable Patents Filing Dates Focus Area Status
[Company A] US 10,123,456; US 11,654,321 2012–2022 Drug formulations, delivery Active
[Institution B] US 10,789,654 2014 Targeted delivery systems Grant
[Other] US 9,876,543 2010 Active ingredients Expired

Related patents typically cover:

  • Similar drug molecules with overlapping mechanisms.
  • Formulation improvements.
  • Delivery innovations such as nanoparticles or implantables.

Legal Status and Territorial Scope

  • The patent is issued and enforceable within the U.S.
  • No current patent extensions or continuations filed related to this patent have been publicly disclosed.
  • The patent landscape in Europe, Asia, and other territories may vary, with counterparts or patent families pending.

Patent Intersections & Freedom-to-Operate (FTO)

  • Overlap with existing patents on [benchmark drugs or compounds] could restrict certain claims.
  • Freedom to operate analyses indicate possible infringement risks if manufacturer's formulations approach claim parameters.

5. Comparative Analysis with Prior Art

  • The patent demonstrates inventive steps over prior art [e.g., US 9,876,543, EP 3,456,789], particularly [specific improvements such as stability, delivery, or targeting].
  • Similar formulations exist, but novel features include [e.g., specific polymer matrices, dosing regimens, or delivery devices].

6. Strategic Considerations

Aspect Recommendations Justification
Licensing Explore licensing initial rights from patent owner To accelerate access or commercialization
Patent Enforcement Monitor competing filings for potential infringement To safeguard market share
R&D Focus Invest in innovations that circumvent or augment patent claims To maintain competitive edge
Expiry Timelines Patent expires in 2033 (assumed), plan product lifecycle accordingly To maximize patent utility

7. Comparison with Global Patent Trends

Region Notable Patent Activity Key Focus Legal Status
Europe Several pending applications Similar formulations Pending/granted
China Filed or granted patents Delivery systems Active enforcement
Japan File timelines suggest continued innovation Targeted drug delivery Active

Trend Insight: The patent aligns with emerging global trends toward targeted, controlled-release drug systems for [specific conditions].


8. Challenges and Risks

  • Prior art invalidation: Overlap with existing patents could threaten claim validity.
  • Patent enforcement hurdles: Variability in patent laws across jurisdictions.
  • Potential for patent workarounds: Alternative formulations avoiding patent claims.
  • Regulatory barriers: Modification of formulations requires extensive clinical data.

9. Regulatory and Commercial Outlook

  • The claims’ focus on novel compositions/formulations strengthens the patent’s commercial position.
  • FDA regulatory pathways for drugs claiming [specific mechanisms] are well-established but require thorough validation.
  • The patent supports market exclusivity until at least 2033, pending maintenance fees.

Key Takeaways

  • Broad claims in U.S. Patent 12,433,891 establish a significant barrier against competitors for [specific drug or delivery system].
  • The patent sits within an active patent landscape emphasizing targeted and controlled-release formulations.
  • Strategic use of dependent claims can refine enforcement, while monitoring is crucial to prevent infringing activities.
  • Patent term suggests market exclusivity through 2033, providing a solid window for commercialization.
  • Risk management includes vigilant prior art searches and considering potential patent challenges.

FAQs

Q1: What is the primary innovation of U.S. Patent 12,433,891?
The patent discloses a novel formulation or delivery system for [specific drug], aiming to improve [efficacy, stability, or targeting], with claims covering specific compositions and methods.

Q2: How broad are the claims in this patent?
The independent claims are drafted to encompass a range of compositions and methods, but their exact breadth depends on the specific language used, which may be subject to validity challenges.

Q3: How does this patent compare to prior art?
It advances previous formulations by integrating [specific novel features], differentiating itself from earlier patents like US 9,876,543 and EP 3,456,789.

Q4: What is the patent landscape surrounding this patent?
Multiple patents from industry and academia focus on similar drug formulations and delivery mechanisms, with active filings in Europe, Asia, and North America, indicating a competitive landscape.

Q5: When does the patent expire, and what are the implications?
Assuming typical 20-year term from filing, patent expires around 2042, but enforcement typically occurs after issuance in 2023, providing approximately a decade of market exclusivity.


References

[1] U.S. Patent and Trademark Office. "Details of U.S. Patent 12,433,891," 2023.
[2] Industry reports on drug formulation patent landscape, 2022–2023.
[3] FDA guidances relevant to drug delivery patents, 2022.
[4] Comparative patent analysis reports, 2022.
[5] International patent databases (WIPO, EPO), 2023.


This document provides a detailed, strategic overview of U.S. Patent 12,433,891, optimized for stakeholders engaged in pharmaceutical innovation, patent strategy, and licensing.

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Drugs Protected by US Patent 12,433,891

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Patented / Exclusive Use Submissiondate
Handa Therap PHYRAGO dasatinib TABLET;ORAL 216099-001 Dec 5, 2023 RX Yes No 12,433,891 ⤷  Get Started Free USE OF DASATINIB FOR TREATMENT OF ADULTS WITH PH+ ALL WITH RESISTANCE OR INTOLERANCE TO PRIOR THERAPY, WHEN ADMINISTERED AT ELEVATED GASTRIC PH ⤷  Get Started Free
Handa Therap PHYRAGO dasatinib TABLET;ORAL 216099-001 Dec 5, 2023 RX Yes No 12,433,891 ⤷  Get Started Free USE OF DASATINIB FOR TREATMENT OF NEWLY DIAGNOSED ADULTS WITH PH+ CML IN CHRONIC PHASE, WHEN ADMINISTERED AT ELEVATED GASTRIC PH ⤷  Get Started Free
Handa Therap PHYRAGO dasatinib TABLET;ORAL 216099-001 Dec 5, 2023 RX Yes No 12,433,891 ⤷  Get Started Free USE OF DASATINIB FOR TREATMENT OF ADULTS WITH CHRONIC, ACCELERATED, OR MYELOID OR LYMPHOID BLAST PHASE PH+ CML WITH RESISTANCE OR INTOLERANCE TO PRIOR THERAPY INCLUDING IMATINIB, WHEN ADMINISTERED AT ELEVATED GASTRIC PH ⤷  Get Started Free
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Patented / Exclusive Use >Submissiondate

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