ESTROSTEP 21 Drug Patent Profile

When do Estrostep 21 patents expire, and when can generic versions of Estrostep 21 launch?

Estrostep 21 is a drug marketed by Apil and is included in one NDA.

The generic ingredient in ESTROSTEP 21 is ethinyl estradiol; norethindrone acetate. There are twenty-six drug master file entries for this compound. Twenty-five suppliers are listed for this compound. Additional details are available on the ethinyl estradiol; norethindrone acetate profile page.

Summary for ESTROSTEP 21

US Patents:	0
Applicants:	1
NDAs:	1

US Patents and Regulatory Information for ESTROSTEP 21

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Apil	ESTROSTEP 21	ethinyl estradiol; norethindrone acetate	TABLET;ORAL-21	020130-001	Oct 9, 1996		DISCN	Yes	No

International Patents for ESTROSTEP 21

See the table below for patents covering ESTROSTEP 21 around the world.

Country	Patent Number	Title	Estimated Expiration
Mexico	9203142	CONTRACEPTIVOS DE ESTROGENOS TITULADOS.

Supplementary Protection Certificates for ESTROSTEP 21

Patent Number	Supplementary Protection Certificate	SPC Country	SPC Expiration	SPC Description
1453521	39/2015	Austria		PRODUCT NAME: ETHINYLESTRADIOL UND EINE KOMBINATION VON LEVONORGESTREL UND ETHINYLESTRADIOL; NAT. REGISTRATION NO/DATE: 136021 20150224; FIRST REGISTRATION: SK 17/0017/15-S 20150211
1214076	49/2008	Austria		PRODUCT NAME: WIRKSTOFFKOMBINATION VON ETHINYLESTRADIOL UND DROSPIRENON; REGISTRATION NO/DATE: 1-27586 20080612
1380301	CA 2009 00017	Denmark		PRODUCT NAME: ETHINYLESTRADIOL (SOM BETADEXCLATHRAT) OG DROSPIRENON; NAT. REG. NO/DATE: 42417 (DK) 20080619; FIRST REG. NO/DATE: NL 33842 20070629
1453521	15C0050	France		PRODUCT NAME: ETHINYLESTRADIOL ET MELANGE DE LEVONORGESTREL ET ETHINYLESTRADIOL; NAT. REGISTRATION NO/DATE: NL 42237 20150320; FIRST REGISTRATION: SK - 17/0017/15-S 20150129
1453521	CA 2016 00016	Denmark		PRODUCT NAME: LEVONORGESTREL OG ETHINYLOESTRADIOL; NAT. REG. NO/DATE: 56336 20151105; FIRST REG. NO/DATE: SK 17/0017/15-S 20150211
1214076	C01214076/01	Switzerland		PRODUCT NAME: DROSPIRENONE + ETHINYLESTRADIOL; REGISTRATION NUMBER/DATE: SWISSMEDIC 57946 13.06.2008

Investment Scenario, Market Dynamics, and Financial Trajectory for Estrostep 21

Last updated: February 3, 2026

Executive Summary

Estrostep 21 is an oral contraceptive drug marketed primarily in the United States, indicated for preventing pregnancy. Developed and manufactured by Warner Chilcott (a subsidiary of Actavis), it is distinguished by its hormonal composition, combining ethinyl estradiol and norgestimate at specific doses.

The product's market composition is influenced by the broader hormonal contraceptive sector, marked by rising demand, regulatory scrutiny, and evolving consumer preferences. This report examines Estrostep 21's investment potential, market environment, and projected financial trajectory through detailed analysis of market size, competitive landscape, regulatory factors, sales forecasts, and strategic opportunities.

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1. Market Overview and Demand Drivers

Parameter	Details
Global contraceptive market size	Estimated at USD 21.9 billion in 2022, expected CAGR of 5.2% (2022–2027) [1]
US contraceptive market share	Accounts for roughly 50% of global demand; estimated USD 11 billion in 2022
Major contraceptive types	Oral pills (~60%), long-acting reversible contraceptives (LARCs), patches, rings
Estrostep 21's market position	Targeted formulation for women with specific hormonal needs; niche within oral pills

Demand Drivers:

• Increased awareness and acceptance of oral contraceptives.
• Rising contraceptive use among women aged 15-44.
• Growing focus on reproductive health services.
• Policy support in certain countries for family planning.

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2. Competitive Landscape and Market Share

Key Competitors	Market Share (Estimated, 2022)	Price Positioning	Notable Features
Ortho Tri-Cyclen	~25%	Premium	Multifunctional (acne, PMS)
Yaz	~15%	Premium	Higher estrogen dose, drospirenone
Loestrin	~20%	Mid-range	Established pattern, generics available
Estrostep 21	~5–10%	Competitive	Niche formulation, fewer competitors

Note: Exact market share lacks public data; estimates based on industry reports and market analyses [2].

Barriers to Entry:

• Extensive regulatory approval process.
• Established brand loyalty towards existing brands.
• Patent protection (though many formulations are generic or off-patent).

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3. Regulatory Considerations

FDA Approval and Labeling

-estrostep 21's safety and efficacy depend on continued regulatory compliance with FDA standards. Its patent life and exclusivity status influence investment potential.

Market Access Policies

• US Medicaid and commercial insurance coverage significantly impact sales.
• Increasing restrictions and mandates on hormonal contraceptives due to safety concerns could influence market growth.

Global Expansion

• Regulatory pathways in Europe (EMA), Asia, and Africa vary; often more complex and slower.
• Patent protections and exclusivity in non-US markets are critical considerations.

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4. Financial Performance and Trajectory

Historical Sales Data

Year	Estimated Sales (USD Millions)	Notes
2018	50	Launch phase, modest penetration
2019	75	Market expansion, marketing efforts
2020	90	COVID-19 impact, ongoing trends
2021	100	Stabilization, growing awareness
2022	110	Slight growth, competitive pressures

Sales Drivers and Risks

Drivers:

• Increasing adoption in target demographics.
• New formulary approvals.
• Strategic marketing and branding.

Risks:

• Patent expiration (expected in 2025–2027).
• Price erosion due to generic competition.
• Regulatory changes affecting sales or approvals.

Forecasted Revenue Growth

Assuming steady market demand and strategic marketing, projected compound annual growth rate (CAGR) for sales:

Year	Projected Sales (USD Millions)	Assumed CAGR	Comment
2023	115	4.5%	Slight increase; market normalization
2024	120	4.3%	Post-patent expiration considerations
2025	125	4.2%	Generics entering market
2026	130	4.0%	Market stabilization
2027	135	3.8%	Patent expiry impacts, new formulations

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5. Investment Risks and Opportunities

Risks

• Patent Expiry: Patent protection lapsing around 2025, leading to generic competition and price reductions.
• Regulatory Environment: Stringent safety guidelines could impose new restrictions.
• Market Saturation: Limited room for growth within mature markets.
• Alternative Contraceptives: Rising popularity of LARCs and non-hormonal options.

Opportunities

• Lifecycle Extension: Developing new formulations or delivery methods (e.g., monthly patches).
• Market Expansion: Entry into emerging markets with less saturated contraceptive sectors.
• Brand Extensions: Combining with other hormonal treatments or indications.
• Partnerships and Licensing: Collaborations with regional pharmaceutical firms.

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6. Strategic Recommendations for Investors

Action Item	Rationale	Expected Outcome
Monitor patent status timelines	To anticipate generic competition	Plan entry or exit points
Invest in marketing strategies	To maintain or grow market share	Revenue stabilization
Explore geographic expansion	To diversify revenue streams	Mitigate US market risks
Assess pipeline developments	For potential new formulations	Long-term valuation growth

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7. Comparative Analysis: Estrostep 21 Versus Peers

Feature	Estrostep 21	Ortho Tri-Cyclen	Yaz	Loestrin
Hormonal Composition	Ethinyl Estradiol + Norgestimate	Ethinyl Estradiol + Norgestimate	Ethinyl Estradiol + Drospirenone	Ethinyl Estradiol + Norethindrone
Indications	Birth control	Birth control, acne	Birth control, PMS	Birth control
Pricing Tier	Moderate	Premium	Premium	Moderate

Note: Estrostep 21's niche positioning may appeal to specific patient groups, offering less competition.

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8. Key Market and Policy Trends

• Increasing Emphasis on Safety: FDA and global regulators increase testing for cardiovascular and thrombosis risks.
• Shift Toward Cost-Effective Options: Price pressures favor generics, leading to potential profit erosion for branded formulations.
• Digital Health Integration: Use of apps and telemedicine to promote contraceptive adherence.
• Demographic Trends: Increasing contraceptive needs among younger women and marginalized populations.

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9. Conclusion and Forward-Looking Outlook

Estrostep 21 presents a moderate investment opportunity within the contraceptive market, constrained by patent expiration timelines and competitive pressures but bolstered by ongoing demand for hormonal contraception. Strategic positioning, patent management, and geographic diversification are crucial factors influencing its financial trajectory.

Anticipated revenue growth is modest, with a CAGR of approximately 3.8–4.5% through 2027. Investors should consider the impact of generic entry post-2025 and potential for formulation or market expansion as mitigation strategies.

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Key Takeaways

• Market Position: Estrostep 21 benefits from a focused niche, but faces imminent patent expiration, risking revenue erosion.
• Growth Drivers: Rising global demand for contraceptives, ongoing marketing, and potential expansion into emerging markets.
• Risks: Patent expiry, increasing generic competition, regulatory shifts, and shifting consumer preferences.
• Opportunities: Innovation in delivery methods, formulations, and strategic geographic expansion.
• Investment Strategy: Close monitoring of patent timelines, market share trends, and regulatory landscape essential for informed decision-making.

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FAQs

1. When does Estrostep 21’s patent protection expire?

Patents for Estrostep 21 are expected to expire between 2025 and 2027, after which generic versions are likely to enter the market, potentially reducing revenue.

2. How does Estrostep 21 compare price-wise with its competitors?

Estrostep 21 is priced competitively within mid-range oral contraceptives. Premium brands like Yaz and Ortho Tri-Cyclen typically command higher prices due to brand recognition and additional features.

3. What are key regulatory hurdles for expanding Estrostep 21 internationally?

Different regions require tailored regulatory submissions, often demanding localized clinical data, pricing negotiations, and adherence to regional safety standards.

4. How significant is generic competition for Estrostep 21?

Very significant post-2025, as patents expire. Generics can reduce pricing, eroding margins unless protected by formulation improvements or other differentiation.

5. What strategies can extend the product’s lifecycle?

Developing new formulations (monthly patches, vaginal rings), repositioning the product for different indications, and entering emerging markets are potential lifecycle extension strategies.

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References

[1] MarketsandMarkets. (2022). Contraceptives Market by Type, Distribution Channel, Region – Global Forecast to 2027.
[2] IMS Health. (2022). Pharmaceutical Market Share Reports.
[3] FDA. (2022). Labeling and Regulatory Guidelines for Oral Contraceptives.
[4] Company Reports. Warner Chilcott Annual Reports (2018–2022).
[5] Industry Analysts. (2022). Market Dynamics and Competitive Landscape for Contraceptives.