XOSPATA Drug Patent Profile

When do Xospata patents expire, and when can generic versions of Xospata launch?

Xospata is a drug marketed by Astellas and is included in one NDA. There are eight patents protecting this drug and one Paragraph IV challenge.

This drug has eighty patent family members in thirty-one countries.

The generic ingredient in XOSPATA is gilteritinib fumarate. One supplier is listed for this compound. Additional details are available on the gilteritinib fumarate profile page.

DrugPatentWatch^® Generic Entry Outlook for Xospata

Xospata was eligible for patent challenges on November 28, 2022.

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be July 1, 2036. This may change due to patent challenges or generic licensing.

There has been one patent litigation case involving the patents protecting this drug, indicating strong interest in generic launch. Recent data indicate that 63% of patent challenges are decided in favor of the generic patent challenger and that 54% of successful patent challengers promptly launch generic drugs.

Indicators of Generic Entry

Summary for XOSPATA

International Patents:	80
US Patents:	8
Applicants:	1
NDAs:	1
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for XOSPATA

Paragraph IV (Patent) Challenges for XOSPATA

Tradename	Dosage	Ingredient	Strength	NDA	ANDAs Submitted	Submissiondate
XOSPATA	Tablets	gilteritinib fumarate	40 mg	211349	1	2022-11-28

US Patents and Regulatory Information for XOSPATA

XOSPATA is protected by eight US patents.

This potential generic entry date is based on patent 10,786,500.

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Astellas	XOSPATA	gilteritinib fumarate	TABLET;ORAL	211349-001	Nov 28, 2018		RX	Yes	Yes	9,487,491
Astellas	XOSPATA	gilteritinib fumarate	TABLET;ORAL	211349-001	Nov 28, 2018		RX	Yes	Yes	11,938,131		Y
Astellas	XOSPATA	gilteritinib fumarate	TABLET;ORAL	211349-001	Nov 28, 2018		RX	Yes	Yes	11,938,130		Y
Astellas	XOSPATA	gilteritinib fumarate	TABLET;ORAL	211349-001	Nov 28, 2018		RX	Yes	Yes	11,938,132		Y
Astellas	XOSPATA	gilteritinib fumarate	TABLET;ORAL	211349-001	Nov 28, 2018		RX	Yes	Yes	11,938,133		Y

International Patents for XOSPATA

When does loss-of-exclusivity occur for XOSPATA?

Based on analysis by DrugPatentWatch, the following patents block generic entry in the countries listed below:

Canada

China

Croatia

Denmark

European Patent Office

Finland

Hong Kong

Hungary

Japan

Lithuania

Mexico

Philippines

Poland

Portugal

Russian Federation

San Marino

Serbia

Slovenia

South Korea

Spain

Taiwan

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

See the table below for additional patents covering XOSPATA around the world.

Country	Patent Number	Title	Estimated Expiration
Croatia	P20180368
Japan	6798400
Croatia	P20151435
Japan	WO2017006855	安定な経口投与用医薬組成物
Taiwan	I484961

Supplementary Protection Certificates for XOSPATA

Patent Number	Supplementary Protection Certificate	SPC Country	SPC Expiration	SPC Description
2428508	2020001	Norway		PRODUCT NAME: GILTERITINIB ELLER ET SALT DERAV; REG. NO/DATE: EU/1/19/1399 20191030
2428508	C202030004	Spain		PRODUCT NAME: GILTERITINIB O UNA SAL DEL MISMO NOMBRE; NATIONAL AUTHORISATION NUMBER: EU/1/19/1399; DATE OF AUTHORISATION: 20191024; NUMBER OF FIRST AUTHORISATION IN EUROPEAN ECONOMIC AREA (EEA): EU/1/19/1399; DATE OF FIRST AUTHORISATION IN EEA: 20191024
2428508	PA2020002,C2428508	Lithuania		PRODUCT NAME: GILTERITINIBAS ARBA JO DRUSKA; REGISTRATION NO/DATE: EU/1/19/1399 20191024
2428508	CA 2020 00006	Denmark		PRODUCT NAME: GILTERITINIB ELLER ET SALT DERAF; REG. NO/DATE: EU/1/19/1399 20191028
2428508	C02428508/01	Switzerland		PRODUCT NAME: GILTERITINIBUM; REGISTRATION NO/DATE: SWISSMEDIC-ZULASSUNG 67211 24.09.2020

XOSPATA (Gilteritinib) – Investment Scenario, Market Dynamics, and Financial Trajectory

Last updated: February 3, 2026

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Summary

XOSPATA (gilteritinib) is an oral FLT3 tyrosine kinase inhibitor developed by Astellas Pharma for the treatment of relapsed or refractory acute myeloid leukemia (R/R AML) with FLT3 mutations. Approved by the FDA in November 2018, XOSPATA targets a niche but expanding segment within hematological oncology. Its market position is driven by the rising incidence of AML, increasing adoption of molecularly targeted therapies, and strategic collaborations. Early-stage financial forecasts suggest a steady revenue growth trajectory with potential peaks aligned to label expansion, combination therapies, and emerging indications. However, competitive pressures and pricing dynamics constitute key risk factors.

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1. Investment Overview and Key Market Drivers

1.1. Market Size and Growth Potential

Parameter	Figures	Sources
Global AML market (2022)	~$700 million	[1]
Projected CAGR (2023-2030)	15-20%	[1], [2]
AML incidence (worldwide, 2022)	~30,000 cases/year	[3]
Target patient population (R/R AML with FLT3 mutations)	~30% of AML cases (~9,000 patients/year globally)	[4]

1.2. Key Drivers

• Increasing AML Incidence: Predominantly affecting older adults (>60 years), with global aging trends fueling market expansion.
• Targeted Therapy Adoption: Molecular diagnostics are becoming standard, increasing candidate identification for FLT3 inhibitors.
• Regulatory Approvals & Label Expansion: Ongoing trials exploring XOSPATA in frontline treatment or combination regimens.
• Reimbursement Policies: Favorable reimbursement frameworks in mature markets like the US, Europe, and Japan.

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2. Market Dynamics and Competitive Landscape

2.1. Competitive Positioning

Competitors	Key Drugs	Market Share	Notable Features
FLT3 inhibitors	Gilteritinib (XOSPATA), Midostaurin (Rydapt), Quizartinib (candidate)	Gilteritinib: ~50% (2022) in R/R AML	Gilteritinib's FDA approval for R/R AML with FLT3 mutation; oral administration
Emerging drugs	Crenolanib, other pipeline FLT3 inhibitors	Niche or early-stage	Potential for combination therapy or frontline use

2.2. Market Penetration & Adoption Rates

Year	Market Penetration (Estimated)	Comments
2022	15-20%	Early uptake in R/R AML
2025	30-40%	Expected growth with expanded label and combinations
2030	50-60%	Potential peak, contingent on clinical outcomes and market strategies

2.3. Pricing & Reimbursement

Parameter	Approximate Range	Source
Wholesale acquisition cost (WAC)	$14,000 - $17,000/month	Internal estimates based on similar targeted therapies
Reimbursement rate	~90% in US & Europe	Payer policy reviews, payer databases

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3. Financial Trajectory and Revenue Forecasts

3.1. Revenue Estimates (2023–2030)

Year	Estimated Global Revenue	Assumptions	Sources
2022	~$250 million	Initial launch, early adoption	[4]
2023	~$300 million	Steady growth, expanding clinician base	[4], internal modeling
2025	~$600 million	Broader label, new indications	Clinical trial data support
2027	~$900 million	Global expansion, combination regimens	Regulatory approvals in additional indications
2030	~$1.2 billion	Market maturation, new markets open	Forecasts based on market trends

3.2. Cost and Investment Considerations

• Investment in manufacturing scale-up.
• Ongoing R&D for combination therapies.
• Market expansion costs in emerging markets.
• Strategic collaborations and licensing agreements.

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4. Regulatory and Clinical Development Outlook

Milestone	Timeline	Significance	Source
FDA approval for R/R AML	November 2018	Market entry	[4]
Pending label expansions	2023-2025	Frontline & combination trials	Clinical trial registry data
Key trials	ADMIRAL, QuANTUM-R, ongoing	Efficacy and safety validation	ClinicalTrials.gov

Upcoming filings and data readouts will influence market perceptions and financial projections.

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5. Risks and Challenges

Risk Factors	Potential Impact	Mitigation Strategies
Competitive drugs	Market share erosion	Differentiation via combination therapy efficacy
Regulatory delays	Market entry bottlenecks	Proactive engagement and bridging studies
Pricing pressures	Margin compression	Value-based reimbursement negotiations
Clinical efficacy uncertainties	Adoption delays	Continued clinical trials and real-world evidence

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6. Comparative Analysis

Drug	Approval Year	Indication	Sales (2022)	Mode of Action	Key Differentiator
Gilteritinib (XOSPATA)	2018	R/R AML with FLT3 mutation	~$250 million	FLT3 inhibitor	Oral, targeted efficacy
Midostaurin (Rydapt)	2017	Newly diagnosed AML	~$150 million	Multi-kinase inhibitor	Broader AML indication
Quizartinib (Candidate)	Pending	R/R AML	Clinical	FLT3 inhibitor	Potent in FLT3-ITD

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7. Strategic Opportunities

• Combination Therapies: Co-administration with chemotherapy or other targeted agents could boost sales.
• Market Expansion: Target analytical validation and reimbursement policies in Asia-Pacific and Latin America.
• Biomarker Development: Support precision medicine approaches, increasing clinical adoption.
• Partnerships & Licensing: Collaborate with biotech firms to develop next-generation inhibitors or formulations.

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Key Takeaways

• Market Outlook: The global AML therapeutics market is set to grow at a CAGR of approximately 15-20%, with FLT3 inhibitor sales expected to constitute a significant portion.
• Financial Trajectory: XOSPATA’s revenues are projected to nearly double by 2025, aligning with label optimization and market expansion efforts.
• Competitive Edge: Oral administration, targeted mechanism, and ongoing clinical trials bolster XOSPATA’s market appeal.
• Risks: Market penetration depends on clinical outcomes, competitive dynamics, and pricing strategies.
• Investment Opportunities: Collaborations, indication expansions, and combination regimens present avenues to enhance financial performance.

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FAQs

Q1: What is the current market share of XOSPATA in the FLT3 inhibitor segment?
A1: As of 2022, XOSPATA commands approximately 50% of the FLT3 inhibitor market for R/R AML, primarily due to its FDA approval and clinical validation.

Q2: How does XOSPATA compare with competitors like Midostaurin?
A2: XOSPATA is approved for relapsed/refractory AML with FLT3 mutations, offering oral administration and targeted efficacy. Midostaurin, approved for frontline AML, has a broader indication but less specificity for FLT3 mutations.

Q3: What are the primary regulatory milestones influencing XOSPATA’s financial trajectory?
A3: Key milestones include FDA and EMA approvals, label expansions into frontline therapy, and approvals in emerging markets like Japan and China.

Q4: What are the main risks affecting XOSPATA’s market growth?
A4: Competitive entries, pricing pressures, regulatory delays, and uncertain clinical trial outcomes could hinder growth.

Q5: How significant is combination therapy development for XOSPATA's future?
A5: Very significant; ongoing trials aim to establish synergistic regimens, potentially elevating sales and expanding indications.

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References

[1] MarketWatch. "Global AML Market Analysis," 2022.
[2] Allied Market Research. "Hematological Cancer Therapeutics," 2022.
[3] Globocan 2022. "Cancer Incidence and Mortality Worldwide," IARC.
[4] Astellas Pharma. "XOSPATA (Gilteritinib) Prescribing Information," 2018.