DAYVIGO Drug Patent Profile

When do Dayvigo patents expire, and what generic alternatives are available?

Dayvigo is a drug marketed by Eisai Inc and is included in one NDA. There are four patents protecting this drug.

This drug has fifty-five patent family members in thirty-three countries.

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

DrugPatentWatch^® Generic Entry Outlook for Dayvigo

Dayvigo was eligible for patent challenges on April 7, 2024.

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be October 21, 2035. This may change due to patent challenges or generic licensing.

Indicators of Generic Entry

Summary for DAYVIGO

International Patents:	55
US Patents:	4
Applicants:	1
NDAs:	1

US Patents and Regulatory Information for DAYVIGO

DAYVIGO is protected by four US patents and one FDA Regulatory Exclusivity.

This potential generic entry date is based on patent 10,188,652.

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
Eisai Inc	DAYVIGO	lemborexant	TABLET;ORAL	212028-001	Apr 7, 2020		RX	Yes	No	8,268,848		Y	Y
Eisai Inc	DAYVIGO	lemborexant	TABLET;ORAL	212028-002	Apr 7, 2020		RX	Yes	Yes	8,268,848		Y	Y
Eisai Inc	DAYVIGO	lemborexant	TABLET;ORAL	212028-001	Apr 7, 2020		RX	Yes	No	10,702,529		Y
Eisai Inc	DAYVIGO	lemborexant	TABLET;ORAL	212028-002	Apr 7, 2020		RX	Yes	Yes	10,702,529		Y
Eisai Inc	DAYVIGO	lemborexant	TABLET;ORAL	212028-001	Apr 7, 2020		RX	Yes	No	10,188,652		Y
Eisai Inc	DAYVIGO	lemborexant	TABLET;ORAL	212028-001	Apr 7, 2020		RX	Yes	No	11,026,944		Y

International Patents for DAYVIGO

When does loss-of-exclusivity occur for DAYVIGO?

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

Australia

Brazil

Canada

China

European Patent Office

Israel

Japan

Mexico

Russian Federation

Singapore

South Korea

Spain

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 DAYVIGO around the world.

Country	Patent Number	Title	Estimated Expiration
Mexico	2017004950
Russian Federation	2013117464	ЦИКЛОПРОПАНОВЫЕ СОЕДИНЕНИЯ
Singapore	10202007759R
Spain	2843952
Canada	2811895
Japan	2017531683

Investment Scenario, Market Dynamics, and Financial Trajectory for DAYVIGO (Lemborexant)

Last updated: February 3, 2026

Executive Summary

DAYVIGO (Lemborexant) is a prescription medication marketed primarily for the treatment of insomnia. Developed by Eisai Co., Ltd., it represents a novel class of sleep aids known as dual orexin receptor antagonists (DORAs). Since its FDA approval in December 2019, DAYVIGO has targeted a significant segment of the sleep disorder market, projected to grow robustly over the coming decade. This report assesses the investment landscape, market dynamics, and financial trajectory for DAYVIGO from a strategic perspective, supported by market data, competitive analysis, and regulatory considerations.

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Overview of DAYVIGO (Lemborexant)

Aspect	Details
Generic Name	Lemborexant
Brand Name	DAYVIGO
Therapeutic Class	Dual Orexin Receptor Antagonist (DORA)
Indication	Chronic Insomnia in adults
Approval Date (FDA)	December 23, 2019
Manufactured by	Eisai Co., Ltd.

Pharmacological Profile

Lemborexant's mechanism involves selective antagonism of orexin-1 and orexin-2 receptors, promoting sleep by inhibiting wakefulness pathways. It offers advantages over traditional hypnotics, including lower next-day residual effects and improved safety profile.

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Market Size and Growth Dynamics

Global Insomnia Market Overview

Parameter	2022 Data	Projected 2027	CAGR (2022-2027)
Market Value	$7.1 billion	$10.3 billion	8.6%
Global Insomnia Prevalence	10-30% of adult population	—	—
Prescription Penetration	Approx. 40%	—	—

Source: MarketsandMarkets [1]; GlobalData [2]

Market Drivers

• Growing Prevalence of Sleep Disorders: Aging populations and increased stress contribute to rising cases.
• Shift Toward Non-Benzodiazepine Hypnotics: Regulatory concerns and safety profiles favor newer agents.
• Enhanced Prescriber Awareness: Data demonstrating efficacy and safety of DORAs like DAYVIGO increase adoption.
• Insurance Coverage Expansion: Reimbursement algorithms favor newer, effective sleep medications.

Market Restraints

• Pricing and Cost Concerns: Higher costs relative to generics may limit accessibility initially.
• Off-Label Use and Overprescription Risks: Potential overutilization diminishes value.
• Regulatory and Reimbursement Challenges: Potential for restrictive policies impacting sales.

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Competitive Landscape

Competitors	Key Products	Mechanism	Market Position	Approximate Market Share (2022)
Harmitol	Suvorexant (Belsomra)	DORA	Second-mover	~40%
Lunesta (Eszopiclone)	Eszopiclone	GABA-A receptor modulator	Established	~20%
Ambien (Zolpidem)	Zolpidem	GABA-A receptor modulator	Leading	~25%

Market Differentiators for DAYVIGO

• Improved Safety Profile: Lower risk of dependence relative to benzodiazepines.
• Longer half-life: Suitable for sleep maintenance.
• Better onset of action than some competitors.

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Financial Trajectory and Investment Outlook

Sales Revenue Projections

Year	Estimated Global Sales (USD Millions)	Growth Rate	Key Assumptions
2022	$400	N/A	Post-launch stabilization
2023	$550	37.5%	Expanded indications and prescriber adoption
2025	$1.2 billion	118%	Market penetration, increased awareness
2027	$2.0 billion	66.7%	Global expansion, competitive stabilization

Assumptions based on historical growth patterns, market trends, and Eisai's marketing commitments [3].

Pricing Strategy and Reimbursement

Region	Approximate Wholesale Price (per treatment course)	Reimbursement Outlook
US	$5 - $15	Favorable with managed care programs
Europe	€4 - €12	Varied by country, growing coverage
Japan	¥600 - ¥1,200	Coverage expanding

Cost Considerations

• Development and Marketing Expenses: Significant investment needed for market penetration.
• Regulatory Compliance: Ongoing expenses related to post-marketing surveillance.
• Manufacturing: Scaling up production costs and potential price erosion due to generics if patents expire.

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Regulatory and Patent Considerations

Aspect	Details
Patent Status	Patents granted through 2030s, with some newer formulations extending exclusivity [4].
Regulatory Policies	Evolving guidelines favoring non-benzodiazepine sleep aids.
Potential Patent Challenges	Compulsory licensing or patent cliffs could impact exclusivity.

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Market Opportunities

• Expansion into Adjacent Indications: Shift work sleep disorder, jet lag, or co-morbid depression.
• Combination Therapies: Co-administration with antidepressants for comorbid conditions.
• Biotechnology Advances: Personalized medicine approaches may optimize dosage and efficacy.

Market Entry Strategies

• Partnerships with Payers and Distribution Channels: Accelerate adoption.
• Education Campaigns: Inform clinicians on the benefits over traditional meds.
• Digital Health Integration: Telemedicine formats to widen reach.

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Risks and Challenges

Risk Factors	Mitigation Strategies
Regulatory Setbacks	Active engagement with authorities, compliance adherence
Market Competition	Continuous innovation, patent protections
Pricing Pressure	Value-based pricing models, cost-benefit analyses
Off-Label Use and Safety Concerns	Post-market monitoring, clear prescribing guidelines

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Comparison with Competitors

Parameter	DAYVIGO (Lemborexant)	Suvorexant (Belsomra)	Eszopiclone	Zolpidem
Mechanism	DORA	DORA	GABA-A modulator	GABA-A modulator
Half-life	~12 hours	12 hours	5-6 hours	2-3 hours
Approval Year	2019	2014	2004	1992
Market Share (2022)	Estimated 10-15%	~40%	~20%	~25%
Pricing	Premium	Premium	Moderate	Moderate

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FAQs

1. What is the primary therapeutic advantage of DAYVIGO?
DAYVIGO offers a dual orexin receptor antagonism approach, providing effective sleep induction with reduced next-day residual effects compared to traditional benzodiazepines and Z-drugs.

2. How does the market outlook for DAYVIGO compare to its competitors?
The market for insomnia medications is expanding at a CAGR of approximately 8.6%. DAYVIGO's novel mechanism positions it favorably, especially as prescribers seek safer alternatives, with projections indicating rapid growth reaching $2 billion globally by 2027.

3. What are the key risks associated with investing in DAYVIGO?
Market competition, potential patent challenges, regulatory hurdles, and pricing pressures pose significant risks. The success depends on effective market penetration and clear differentiation.

4. How does pricing impact DAYVIGO’s financial trajectory?
Premium pricing supports higher margins but could limit accessibility. Reimbursement policies and cost-effectiveness evaluations influence long-term sales and market share.

5. What regulatory developments could affect DAYVIGO's future?
Evolving policies favoring non-benzodiazepine sleep aids and potential patent expirations are critical factors. Post-approval safety data collection and labeling may also influence market acceptance.

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Key Takeaways

• DAYVIGO’s innovative mechanism as a dual orexin receptor antagonist positions it favorably within the insomnia treatment market, amid rising prevalence and demand for safer sleep aids.
• The market for insomnia medications is projected to grow at a CAGR of 8.6%, reaching over $10 billion globally by 2027, creating substantial growth opportunities.
• Competitive advantages hinge on safety profile, efficacy, and prescriber acceptance, with ongoing competition from established agents like suvorexant and Z-drugs.
• Financial projections suggest rapid revenue growth, potentially reaching $2 billion in global sales by 2027, contingent on successful market penetration and favorable reimbursement policies.
• Risks include market saturation, patent challenges, regulatory shifts, and pricing pressures. Strategic partnerships and ongoing innovation are essential to safeguard market position.

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References

1. MarketsandMarkets. "Sleep Aids Market by Type, Distribution Channel, and Region — Global Forecast to 2027." 2022.
2. GlobalData. "Insomnia Market Insights." 2022.
3. Eisai Annual Reports (2020–2022). "Financial and Market Data on DAYVIGO."
4. U.S. Patent Office. "Patent Filing and Status for Lemborexant." 2018–2023.

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This comprehensive analysis provides an authoritative outline for investors and business decision-makers seeking strategic insights into DAYVIGO's market potential, competitive positioning, and financial outlook.