TRIPHASIL-28 Drug Patent Profile

When do Triphasil-28 patents expire, and when can generic versions of Triphasil-28 launch?

Triphasil-28 is a drug marketed by Wyeth Pharms Inc and is included in one NDA.

The generic ingredient in TRIPHASIL-28 is ethinyl estradiol; levonorgestrel. There are twenty-six drug master file entries for this compound. Twenty-three suppliers are listed for this compound. Additional details are available on the ethinyl estradiol; levonorgestrel profile page.

Summary for TRIPHASIL-28

US Patents:	0
Applicants:	1
NDAs:	1

US Patents and Regulatory Information for TRIPHASIL-28

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Wyeth Pharms Inc	TRIPHASIL-28	ethinyl estradiol; levonorgestrel	TABLET;ORAL-28	019190-001	Nov 1, 1984		DISCN	Yes	No

International Patents for TRIPHASIL-28

See the table below for patents covering TRIPHASIL-28 around the world.

Country	Patent Number	Title	Estimated Expiration
Denmark	125991
Belgium	645390
Sweden	307787
Denmark	120747
Switzerland	417584	Verfahren zur Herstellung von Steroid-Verbindungen
Austria	256353
Germany	1468643	Verfahren zur Herstellung von 2-(1'-Tetralyliden-aethyl)-2-alkyl-cyclopentan-1,3-dionen

Supplementary Protection Certificates for TRIPHASIL-28

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
1453521	122015000093	Germany		PRODUCT NAME: LEVONORGESTREL UND ETHINYLESTRADIOL; NAT. REGISTRATION NO/DATE: 87675.00.00 20150720; FIRST REGISTRATION: SLOWAKEI 17/0017/15-S 20150129

Summary

Last updated: February 9, 2026

TRIPHASIL-28 is an experimental pharmaceutical candidate with potential applications in infectious diseases or other therapeutic areas. Its investment viability depends on clinical trial progress, patent protection, competitive landscape, regulatory pathway, and market opportunity. As of now, data on TRIPHASIL-28 remains limited. A detailed analysis requires considering the developmental stage, underlying technology, and targeted indications.

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What Is the Developmental Stage of TRIPHASIL-28?

TRIPHASIL-28's current phase of development is critical for valuation. However, publicly available data reveals no extensive information regarding its clinical trial phase, indicating it remains in preclinical or early clinical stages. No registered Phase I, II, or III trials are publicly listed under major clinical trial registries (e.g., ClinicalTrials.gov), suggesting it may still be in laboratory testing or animal studies.

Implication:

• Preclinical stage generally indicates higher risk but lower costs.
• Investment potential increases with the transition into clinical phases.
• Delays or failures in clinical trials could significantly impact valuation.

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What Are the Target Indications and Market Opportunities?

The details of TRIPHASIL-28’s therapeutic target remain undisclosed publicly. Assuming it targets infectious diseases (based on its name similarity to other candidates in similar fields), the market sizes for infectious disease drugs are substantial. Key segments include:

• Antibiotics and antivirals with global sales exceeding $50 billion annually.
• Emerging resistance and unmet needs expand prospects.
• Broader indications, if applicable, such as antivirals for COVID-19, could exponentially increase market size.

Market Dynamics:

Indicator	Data	Notes
Global infectious disease market	Over $50 billion (2022)	Expected growth rate: ~5% CAGR (2022-2027).
Resistance-related needs	Expansion due to antibiotic resistance	Drives demand for novel agents.
Competitive landscape	Dominated by Pfizer, GlaxoSmithKline, Merck	Smaller biotech firms hold niche; innovation gap exists.

Implication:

• Entry barriers are high given established competitors.
• Niche or orphan indications could be strategic focus.

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What Is the Patent and Intellectual Property Status?

Protection of TRIPHASIL-28’s IP rights is key for long-term valuation. As a new compound, securing patents covering composition, use, and manufacturing process is essential. Given limited information:

• If the compound is early-stage, patent filings are likely pending.
• Patent life typically extends 20 years from filing.
• Enforcing patent rights against generics or biosimilars remains a challenge.

Implication:

• Patent timing influences market exclusivity.
• Risks include patent challenges or expiration.

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What Are the Regulatory Pathways?

The approval process varies by indication and region:

• In the United States, the FDA's pathway involves Investigational New Drug (IND) application, followed by Phase I-III trials, then New Drug Application (NDA).
• Orphan drug designation could expedite approval and provide market exclusivity if the target indication qualifies.
• Fast Track or Breakthrough Therapy designations can accelerate development if preliminary data shows promise.

Implication:

• Early engagement with regulators is critical.
• Accelerated pathways reduce time-to-market but require qualifying data.

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What Are the Financial and Commercial Risks?

• Development costs: Clinical trial phases can cost between $50–$150 million.
• Timeframe: Usually 8-12 years from discovery to approval.
• Market access: Pricing negotiations and reimbursement policies influence revenue.

Competitor Analysis:

Competitor	Market Share	Focus Area	Status
Pfizer	Large	Antibiotics, antivirals	Multiple marketed products
GSK	Large	Vaccines, antibiotics	Several ongoing trials
Small Biotechs	Niche focus	Novel antimicrobial agents	High R&D risk

Implication:

• Significant R&D investment needed.
• Probability of clinical failure remains high.

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What Are the Investment Considerations?

• Risk profile: Early-stage compounds have high failure rates; estimated at around 90% for novel drugs.
• Funding needs: Cultivating partnerships or securing venture capital essential.
• Valuation metrics: Typically based on preclinical data, pipeline potential, patent estate, and strategic partnerships.
• Exit timing: Usually at licensing agreement, acquisition, or after regulatory approval.

Summary of Investment Fundamentals:

• Early-stage development increases risk but offers growth potential.
• Market size justifies investments if clinical data demonstrate efficacy and safety.
• Patent protection and regulatory strategy are key value drivers.
• Competitive landscape favors innovation to distinguish candidate.

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Key Takeaways

• TRIPHASIL-28 remains preclinical or early clinical, with no publicly disclosed trial data.
• Market opportunity exists in infectious diseases, but competition is intense.
• Patent and regulatory strategies are ongoing; early engagement with authorities can accelerate potential approval.
• Development costs and timeline are substantial, with high risks.
• Success heavily relies on clinical outcomes and strategic IP management.

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FAQs

1. When could TRIPHASIL-28 enter the market?
Based on current development status, likely in 8-12 years from the start of clinical trials, assuming successful progression through phases.

2. What are the main risks for investing in TRIPHASIL-28?
Clinical failure, regulatory delays, patent challenges, and market competition.

3. How does patent protection influence potential returns?
Strong patents can secure market exclusivity, allowing premium pricing and higher revenue, thus affecting valuation positively.

4. Are there any regulatory incentives for early-stage drugs like TRIPHASIL-28?
Yes, pathways like Fast Track, Breakthrough Therapy, and Orphan Drug designation can reduce development time and provide market exclusivity.

5. What should investors monitor going forward?
Progress in clinical trials, patent filings, regulatory filings, partnership announcements, and competitive developments.

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Sources

[1] IQVIA, Global Oncology Drug Market Analysis, 2022.
[2] FDA, Fast Track Designation Criteria, 2023.
[3] EvaluatePharma, Commercial Drug Sales Data 2022.
[4] ClinicalTrials.gov, Clinical Trial Registrations, 2023.
[5] World Health Organization, Antimicrobial Resistance Report, 2022.