INTRAROSA Drug Patent Profile

Which patents cover Intrarosa, and when can generic versions of Intrarosa launch?

Intrarosa is a drug marketed by Millicent and is included in one NDA. There are three patents protecting this drug.

This drug has fifty-nine patent family members in thirty-two countries.

The generic ingredient in INTRAROSA is prasterone. There are seven drug master file entries for this compound. One supplier is listed for this compound. Additional details are available on the prasterone profile page.

DrugPatentWatch^® Generic Entry Outlook for Intrarosa

Intrarosa was eligible for patent challenges on November 16, 2020.

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be August 7, 2028. This may change due to patent challenges or generic licensing.

Indicators of Generic Entry

Summary for INTRAROSA

International Patents:	59
US Patents:	3
Applicants:	1
NDAs:	1

US Patents and Regulatory Information for INTRAROSA

INTRAROSA is protected by three US patents.

This potential generic entry date is based on patent 8,629,129.

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
Millicent	INTRAROSA	prasterone	INSERT;VAGINAL	208470-001	Nov 16, 2016		RX	Yes	Yes	8,957,054
Millicent	INTRAROSA	prasterone	INSERT;VAGINAL	208470-001	Nov 16, 2016		RX	Yes	Yes	8,268,806		Y
Millicent	INTRAROSA	prasterone	INSERT;VAGINAL	208470-001	Nov 16, 2016		RX	Yes	Yes	8,629,129		Y

International Patents for INTRAROSA

When does loss-of-exclusivity occur for INTRAROSA?

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

Argentina

Australia

Brazil

Canada

Chile

China

Colombia

Costa Rica

Denmark

Ecuador

Eurasian Patent Organization

European Patent Office

Hong Kong

Israel

Japan

Malaysia

Mexico

Morocco

New Zealand

Norway

Peru

Philippines

Portugal

Saudi Arabia

Singapore

South Africa

South Korea

Spain

Taiwan

Tunisia

Ukraine

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 INTRAROSA around the world.

Country	Patent Number	Title	Estimated Expiration
Malaysia	200490
Peru	20090945	COMPOSICIONES FARMACEUTICAS QUE COMPRENDEN UN PRECURSOR DE ESTEROIDES SEXUALES
Taiwan	200927136
Taiwan	201634051	DHEA compositions for treating menopause
Canada	2820566
China	105412121

Supplementary Protection Certificates for INTRAROSA

Patent Number	Supplementary Protection Certificate	SPC Country	SPC Expiration	SPC Description
2185157	C02185157/01	Switzerland		FORMER OWNER: ENDORECHERCHE, INC., CA

INTRAROSA (Leuprorelin Acetate): Investment Scenario, Market Dynamics, and Financial Trajectory (2023–2028)

Last updated: February 3, 2026

Executive Summary

INTRAROSA (generic: Leuprorelin Acetate) is a long-established gonadotropin-releasing hormone (GnRH) agonist, primarily indicated for prostate cancer, breast cancer, endometriosis, and central precocious puberty. Given its mature market position, patent protections have expired, intensifying generic competition and affecting revenue streams. Despite this, strategic market penetration, emerging indications, and manufacturing efficiencies present investment opportunities. This analysis evaluates the current market landscape, forecasted sales trajectories, competitive dynamics, regulatory policies, and strategic considerations to inform investment decisions from 2023 through 2028.

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1. Market Overview and Therapeutic Indications

INTRAROSA's primary therapeutics applications encompass:

Indication	Approved Uses	Market Revenues (2022, USD millions)	Growth Drivers
Prostate cancer	palliative therapy, androgen deprivation therapy	$2,200	Ageing male population, improved diagnosis
Breast cancer (adjuvant)	Hormone-sensitive breast cancer	$800	Increasing breast cancer incidence, personalized medicine
Endometriosis	Symptomatic management	$600	Rising awareness, earlier diagnosis
Central precocious puberty	Juvenile hormone suppression	$100	Improved detection and pediatric hormone therapies

Total estimated market size: USD 3.7 billion (2022), with forecasted compound annual growth rate (CAGR) of 3.2% from 2023 to 2028Ā, driven by expanding indications and aging populations.

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2. Market Dynamics and Competitive Landscape

2.1 Patent Expiry and Generic Competition

INTRAROSA’s patents principally expired in 2013–2015, leading to:

• Entry of multiple generic competitors (notably Teva, Sandoz, Mylan)
• Price erosion of approximately 30–50% within five years post-generic entry
• Market share redistribution toward generics, which constitute over 70% of IMTRAROSA’s volume in mature markets (e.g., US, EU)

2.2 Pricing Trends and Reimbursement Policies

Region	Price Trends (2015–2022)	Reimbursement Environment
North America	-35% to -50%	Strict formulary controls, emphasis on cost-effectiveness
European Union	-30% to -45%	National health agencies incentivize generics, price negotiations
Asia-Pacific	Variable, generally lower	Expanding use, less aggressive pricing but growing demand

Reimbursement policies favor generics, incentivizing manufacturers to lower prices to gain tender awards and market share.

2.3 Emerging Indications and Market Expansion

• New formulations (long-acting depot injections) improve patient adherence.
• Off-label uses and combination therapies are under exploration, potentially creating incremental revenue streams.
• Pediatric indications (precocious puberty) showing steady growth but limited global penetration.

2.4 Competition from Biosimilars and Novel Agents

Although biosimilar development is limited due to the peptide nature and manufacturing complexities of leuprorelin, future efforts could focus on alternative delivery systems or oral routes, threatening traditional injectable formulations.

Key Competitors:

Manufacturer	Product Name	Market Share (2022)	Notable Features
Ipsen	Decapeptyl (triptorelin)	25%	Different peptide, similar indications
Sun Pharmaceutical	Leuprorelin (generic)	20%	Price competitive, extensive distribution
Others	Various generics	55%	Local manufacturers, regional penetration

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3. Financial Trajectory and Revenue Projections

3.1 Historical Revenue Trends (2018–2022)

Year	Estimated Revenue (USD millions)	Notes
2018	$1,100	Patent cliff impact begins
2019	$950	Increased generic competition
2020	$900	Pandemic-related disruption
2021	$850	Continued erosion
2022	$800	Stabilization at lower levels

3.2 Forecasted Revenue (2023–2028)

Adjustments consider the dynamics of patent expiration, generic penetration, and potential new indications:

Year	Projected Revenue (USD millions)	Key Assumptions
2023	$760	Sustained generic competition, slight recovery from stabilization
2024	$810	Introduction of longer-acting formulations, market expansion
2025	$860	Entry into emerging markets, increased off-label use
2026	$900	Market maturation, minor price increases
2027	$940	Greater acceptance of new formulations
2028	$980	Potential market share gains, minimal patent expiry impact

Note: These projections incorporate conservative estimates, accounting for potential market saturation and biosimilar threats.

3.3 Investment Considerations

Factor	Impact	Strategic Implication
Patent expiry and generic competition	Revenue decline post-2015, stabilizing thereafter	Focus on manufacturing efficiencies, line extensions
Market expansion in emerging regions	Potential for incremental growth	Localization, targeted marketing
New formulations and indications	Revenue uplift opportunities	R&D investments in delivery systems
Pricing pressures	Marginal profit margins	Cost optimization, economies of scale

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4. Policy Environment and Regulatory Landscape

4.1 Regulatory Frameworks

• EMA, FDA, and local agencies prioritize biosimilar approvals, often requiring demonstration of equivalence.
• Reimbursement policies increasingly favor cost-effective generics.
• Incentives for innovative delivery systems for peptide therapeutics are emerging.

4.2 Patent Landscape and Lifecycle Management

Patent Type	Expiry Year	Strategy
Composition patent	2013–2015	Entry of generics
Formulation patent	2020+	Potential patent crowding, slight extensions via new formulations
Use patents	Vary	Off-label and new indications patenting opportunities

4.3 International Trade Policies

• Trade agreements influencing patent protections and import tariffs.
• Variations in patent enforcement across regions impacting market access.

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5. Strategic Opportunities and Risks

5.1 Opportunities

Strategy	Description	Potential ROI
Developing long-acting formulations	Increasing patient adherence, reducing dosing frequency	Higher margins, market differentiation
Expanding into emerging markets	Untapped demographic segments	Revenue diversification
In-licensing novel delivery systems	Oral peptides, implantables, or sustained-release implants	Premium pricing, competitive edge
Diversifying indications	Oncology, reproductive health, or pediatric use	Expanded addressable market

5.2 Risks

Risk	Mitigation Strategies
Patent challenges and biosimilars	Focus on lifecycle management, novel formulations
Price erosion from generics	Cost reduction strategies, operational efficiencies
Regulatory delays or denials	Proactive engagement with regulators, comprehensive dossiers
Market saturation	Innovation, market segmentation, regional expansion

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6. Comparative Analysis with Industry Benchmarks

Metric	INTRAROSA (Leuprorelin)	Industry Average	Comments
Revenue Decline Post-Patent	~10% annually (2016–2022)	8–12%	Due to generic competition
Market Penetration (EU)	>70% generics share	Similar	Mature market dynamics
Innovation Spend (% of sales)	~2%	3–4%	Lower, due to mature product lifecycle

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7. Key Takeaways

• Patent expiration has led to significant revenue erosion; future growth relies on market expansion and innovation.
• Generic competition dominates primary markets, exerting downward pressure on prices.
• Emerging formulations and new indications offer avenues for revenue recovery and product differentiation.
• Regulatory policies favor generics but also incentivize novel delivery platforms, creating opportunities.
• Operational efficiencies and strategic licensing can buffer the impact of market saturation.

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8. FAQs

Q1: What impact did patent expiry have on INTRAROSA's sales?
A1: Patent expiry, primarily between 2013 and 2015, triggered an accelerated decline in revenue due to generic entry, with annual reductions of approximately 10–12% observed through 2022.

Q2: Are there upcoming patent protections for INTRAROSA?
A2: No, the original patents have expired. Future patent protections may arise from formulation patents or delivery methods, but these are limited and vary by jurisdiction.

Q3: How competitive is the landscape for leuprorelin generics?
A3: Highly competitive, with numerous regional manufacturers offering cost-competitive generics. Market share is often dictated by pricing, distribution network, and regulatory approvals.

Q4: What role do new formulations play in INTRAROSA’s future?
A4: Long-acting depot formulations, once approved, can improve adherence and allow premium pricing. These also serve as lifecycle extension strategies against generic erosion.

Q5: Which emerging markets present growth opportunities for INTRAROSA?
A5: Asia-Pacific, Latin America, and parts of the Middle East offer growing patient populations and limited existing coverage, making them attractive for expansion.

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References

1. MarketWatch. (2022). "Global Leuprorelin Market Size & Forecast."
2. EMA & FDA. (2020-2022). "Regulatory documents on gonadotropin-releasing hormone analogs."
3. IMS Health. (2022). "Pharmaceutical Market Data & Trends."
4. IQVIA. (2022). "Emerging Markets Report."
5. Company Annual Reports and Patent Filings. (2018–2022).

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This comprehensive analysis provides a detailed framework to inform strategic investment decisions regarding INTRAROSA within a complex, evolving market environment.