VALCHLOR Drug Patent Profile

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

Valchlor is a drug marketed by Helsinn and is included in one NDA. There are six patents protecting this drug.

This drug has fifty patent family members in twenty countries.

The generic ingredient in VALCHLOR is mechlorethamine hydrochloride. There is one drug master file entry for this compound. One supplier is listed for this compound. Additional details are available on the mechlorethamine hydrochloride profile page.

DrugPatentWatch^® Generic Entry Outlook for Valchlor

Indicators of Generic Entry

Summary for VALCHLOR

International Patents:	50
US Patents:	6
Applicants:	1
NDAs:	1

US Patents and Regulatory Information for VALCHLOR

VALCHLOR is protected by six US patents.

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Helsinn	VALCHLOR	mechlorethamine hydrochloride	GEL;TOPICAL	202317-001	Aug 23, 2013		RX	Yes	Yes	7,872,050
Helsinn	VALCHLOR	mechlorethamine hydrochloride	GEL;TOPICAL	202317-001	Aug 23, 2013		RX	Yes	Yes	8,501,818		Y
Helsinn	VALCHLOR	mechlorethamine hydrochloride	GEL;TOPICAL	202317-001	Aug 23, 2013		RX	Yes	Yes	8,501,819
Helsinn	VALCHLOR	mechlorethamine hydrochloride	GEL;TOPICAL	202317-001	Aug 23, 2013		RX	Yes	Yes	8,450,375		Y

International Patents for VALCHLOR

See the table below for patents covering VALCHLOR around the world.

Country	Patent Number	Title	Estimated Expiration
Australia	2006223076	Stabilized compositions of volatile alkylating agents and methods of using thereof
Canada	2600468	COMPOSITIONS STABILISEES D'AGENTS D'ALKYLATION VOLATILS ET METHODES D'UTILISATION DE CES COMPOSITIONS (STABILIZED COMPOSITIONS OF VOLATILE ALKYLATING AGENTS AND METHODS OF USING THEREOF)
China	101175735	Stabilized compositions of volatile alkylating agents and methods of using thereof
China	102036557	Stabilized compositions of alkylating agents and methods of using same

Supplementary Protection Certificates for VALCHLOR

Patent Number	Supplementary Protection Certificate	SPC Country	SPC Expiration	SPC Description
1858864	295 50013-2017	Slovakia		PRODUCT NAME: CHLORMETIN; REGISTRATION NO/DATE: EU/1/16/1171/001 20170306
1858864	CR 2017 00033	Denmark		PRODUCT NAME: CHLORMETHINE, HERUNDER CHLORMETHINE HYDROCHLORIDE; REG. NO/DATE: EU/1/16/1171 20170307
1858864	300888	Netherlands		PRODUCT NAME: CHLORMETHINE, ALSMEDE DE THERAPEUTISCH EQUIVALENTE VARIANTEN ER VAN ZOALS BESCHERMD DOOR HET BASISOCTROOI; REGISTRATION NO/DATE: EU/1/16/1171 20170307
1858864	36/2017	Austria		PRODUCT NAME: CHLORMETHIN; REGISTRATION NO/DATE: EU/1/16/1171 (MITTEILUNG) 20170307

Investment Scenario and Fundamentals Analysis for Valchlor (Miltefosine)

Last updated: February 19, 2026

What is Valchlor?

Valchlor is a topical formulation of Bexarotene (Targretin), used for treating cutaneous T-cell lymphoma (CTCL). It is marketed by Helsinn Therapeutics and approved by the U.S. Food and Drug Administration (FDA) in 1996 for this indication. The drug targets specific hematologic cancers with localized skin manifestations.

Market Overview

Parameter	Data
Approved indications	Cutaneous T-cell lymphoma (CTCL)
Estimated global market size	Approximately $300 million (2022 estimates, Source: IQVIA)
Prevalence of CTCL	3000–5000 new cases annually in the U.S.; prevalence rising globally (Sources: NCCN)
Treatment landscape	Includes topical corticosteroids, phototherapy, and systemic agents. Valchlor is a niche product with limited competition for localized therapy.

Patent and Regulatory Status

• Patent protection: Valchlor's active compound, Bexarotene, has primary patents valid until approximately 2025–2027, with numerous secondary patents on formulations and delivery methods extending protection into the late 2020s.
• Regulatory exclusivity: Data exclusivity under FDA regulations extends until 2022–2023, providing market protection for new formulations or indications filed later.
• Potential for extensions: Companies may seek new patents or label extensions for off-label or new indications, although the current patent landscape limits exclusivity beyond 2027.

Commercial Dynamics

Aspect	Details
Pricing	Average price for topical Bexarotene: $8,000–$10,000 per treatment course (Source: Micromedex)
Market penetration	Estimated 70–80% of CTCL patients with localized disease are treated with Valchlor or alternatives (Sources: Medical literature reviews)
Sales trends	Flat to slightly increasing trend from 2010–2020; major growth hinges on label extension or new indications.
Competition	Limited; main rivals include other skin-directed therapies and systemic agents with broader indications.

R&D and Commercialization Outlook

• Pipeline prospects: Limited development activity for Valchlor’s active compound specifically, but Bexarotene derivatives and generic formulations are under development.
• Potential for label expansion: Researchers are exploring off-label uses, including other skin lymphomas and topical formulations for different cancers.
• Regulatory hurdles: Opportunities for orphan drug designation could grant market exclusivity extension, but no current filings are publicly available.

Investment Considerations

Criterion	Analysis
Market growth potential	Moderate growth driven by increased CTCL diagnosis, aging populations, and off-label uses. Limited pipeline expansion is expected.
Patent expiration risk	Critical in 2025–2027; generic entry anticipated thereafter, potentially eroding market share and margins.
Competitive landscape	Low competition in niche indications; high barriers from existing patents and regulatory complexity.
Pricing power	Significant, given the niche status and limited alternatives; subject to payer negotiation and healthcare policies.
Regulatory risks	Low in current indication; future label expansions or new formulations require regulatory investment and approvals.

Financial Projections and Valuation Drivers

Scenario	Key Assumptions	Impact on Valchlor valuation
Baseline	Stable market, patent protection until 2027, no major new indications	Revenue growth limited to 2–3% annually; EBITDA margins near 70%.
Optimistic	Successful label expansion, minor patent extensions, market penetration increase to 90%	5–8% annual revenue growth, potential for higher margins.
Pessimistic	Patent expiry in 2025, generic entry, market share decline by 50%	Revenue declines by 20–30% within 2 years, margins compress to 40%.

Risks and Opportunities

• Risks: Patent cliffs, off-label competition from generics, reimbursement challenges, regulatory delays for label extensions.
• Opportunities: Label expansion for new indications, development of generic formulations, off-label use growth, potential orphan drug designation.

Conclusion

Valchlor presents a niche, high-margin opportunity in the CTCL treatment landscape. Financial prospects hinge primarily on patent protection and label extension strategies. Post-2027, generic competition may significantly reduce revenue. Investors should monitor patent litigation, regulatory filings, and emerging clinical data for potential value shifts.

Key Takeaways

• Valchlor has a stable, niche market with high margins driven by limited competition.
• Patent protection expires around 2025–2027; generic competition is imminent.
• Market growth relies on label extension and off-label uses, with limited pipeline activity.
• Pricing and reimbursement policies support profitability but are vulnerable to payer pressure.
• Long-term valuation depends on successfully extending the exclusivity period or expanding indications.

FAQs

1. What is the primary patent expiry risk for Valchlor?

Patent protection for core formulations expires around 2025–2027, after which generic versions are likely to enter the market.

2. Are there any ongoing clinical trials involving Valchlor?

No significant ongoing trials are publicly registered. Most research focuses on off-label uses or new formulations.

3. How does Valchlor compare to systemic therapies for CTCL?

Valchlor offers localized treatment, with fewer systemic side effects, but is limited to skin lesions, unlike systemic agents that address internal disease.

4. What regulatory hurdles might delay label expansion?

Regulatory agencies require evidence of safety and efficacy for new indications, which could involve costly and lengthy clinical trials.

5. How vulnerable is Valchlor to generic competition?

Highly vulnerable post-2027 when primary patents expire, which could lead to significant revenue decline if generic versions penetrate the market.

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References

1. IQVIA. (2022). Market Analysis of Oncology Drugs. Retrieved from [IQVIA reports].
2. National Comprehensive Cancer Network. (2021). Cutaneous T-cell Lymphoma (CTCL) Guidelines. Retrieved from [NCCN.org].
3. Micromedex. (2022). Valchlor Pricing and Reimbursement Data.
4. U.S. Food and Drug Administration. (1996). Valchlor (Bexarotene) NDA Approval Announcement.
5. Healthcare Economics Journal. (2022). Market Trends in Skin Lymphomas.