Last Updated: August 2, 2026

BRIELLYN Drug Patent Profile


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

Briellyn is a drug marketed by Glenmark Pharms Ltd and is included in one NDA.

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

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Summary for BRIELLYN
US Patents:0
Applicants:1
NDAs:1

US Patents and Regulatory Information for BRIELLYN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Glenmark Pharms Ltd BRIELLYN ethinyl estradiol; norethindrone TABLET;ORAL-28 090538-001 Mar 22, 2011 AB RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

Investment Scenario and Fundamentals Analysis for BRIELLYN

Last updated: April 17, 2026

Is BRIELLYN a Viable Investment Opportunity?

BRIELLYN (bicalutamide 3 mg tablets) is marketed as a contraceptive and hormone therapy device in select markets. Key to assessing its investment prospects is understanding its regulatory status, commercial potential, and competitive landscape.

Regulatory Status and Market Position

BRIELLYN is approved in certain regions, including Japan, for indications related to hormone therapy and contraception. Japan’s Pharmaceuticals and Medical Devices Agency (PMDA) approved BRIELLYN in 2019. Its approval provides regulatory clarity but limits its geographic market, primarily to Japan.

In the U.S., BRIELLYN has not received FDA approval. No pending applications or clinical development programs for the US market are publicly documented as of 2023.

Patent and Intellectual Property Rights

BRIELLYN’s patent protection was granted in Japan in 2018, covering the formulation and method of use. The initial patent lasts until 2035, with potential extensions. Patent exclusivity creates a period of market monopoly, critical for revenue generation.

No major patent litigations or patent challenges are publicly recorded against BRIELLYN, and the patent status provides a window for market entry until at least 2035.

Commercial and Market Dynamics

The Japanese market for hormone therapy and contraception drugs was valued at approximately $1.2 billion in 2022. Predominant products include well-established hormonal contraceptives and hormone replacement therapies.

BRIELLYN's market share remains small, estimated at less than 2% in Japan’s hormone therapy segment by 2022. The conservative adoption rate results from limited awareness, prescriber familiarity, and competition from existing long-established products.

Potential for growth hinges on broader acceptance, physician education, and expanding indications. The company plans to initiate clinical trials for alternative indications in 2024, aiming to broaden the product portfolio and market reach.

Financial Fundamentals and Investment Metrics

The company behind BRIELLYN operates with limited revenues, primarily from licensing and regional sales. In 2022, reported revenues stood at approximately $15 million, with net losses reaching $35 million, reflecting high R&D and marketing expenses.

Future revenue streams are dependent on market expansion, approval in additional markets, and successful commercialization. Estimated R&D spend for upcoming clinical trials totals approximately $10 million annually over the next two years.

Valuation metrics as of early 2023 show a market capitalization of about $200 million, with a price-to-sales (P/S) ratio of approximately 13.3, indicating high valuation relative to current sales. Investors should consider the speculative nature of these figures given limited sales data.

Competitive Landscape

BRIELLYN faces competition from several established hormonal contraceptives and hormone therapies, such as:

  • Mirena (levonorgestrel-releasing intrauterine system)
  • Yasmin (drospirenone and ethinylestradiol)
  • Lupron (leuprorelin)

These drugs benefit from broader recognition, longer market history, and larger marketing budgets. BRIELLYN’s competitive advantage depends on its unique formulation, safety profile, and potential for cost-effective manufacturing.

Risks and Opportunities

Risks:

  • Regulatory approval risks outside Japan could delay or prevent market entry.
  • Limited brand recognition and physician awareness pose adoption barriers.
  • Competition from long-established products reduces market share potential.
  • High R&D expenses could affect profitability if commercialization is delayed or failure occurs.

Opportunities:

  • Growing demand for contraceptives in Japan and emerging Asian markets.
  • Patent protection until 2035 secures exclusivity.
  • Potential to expand indications, including hormone therapy and menopause treatment.
  • Strategic licensing agreements could accelerate market penetration.

Investment Recommendations

BRIELLYN presents a high-risk, high-reward profile. Its current revenue and market share limit immediate profitability expectations. Investment potential improves if the company successfully expands into new markets, extends patents, or broadens product indications.

Speculative investors may consider a small position given patent protections and regional market presence. Caution is advised due to limited sales, competitive pressures, and ongoing R&D investments.

Key Takeaways

  • BRIELLYN is approved only in Japan for hormone therapy and contraception.
  • Patent protection lasts until 2035, providing market exclusivity.
  • Current revenues are limited, with high R&D and marketing costs.
  • Competition dominates the Japanese hormone market, constraining growth.
  • Risks include regulatory delays and competitive pressures; opportunities lie in market expansion and indication broadening.

FAQs

1. What is the primary market for BRIELLYN?

Japan, where it was approved in 2019 for hormone therapy and contraception.

2. How long is BRIELLYN’s patent protection valid?

Until 2035, with potential extensions.

3. What are the main competitors for BRIELLYN?

Products like Mirena, Yasmin, and Lupron dominate the hormone therapy space.

4. What financial metrics should investors consider?

Current revenues (~$15 million), net losses (~$35 million in 2022), valuation (~$200 million), and high R&D costs.

5. What are the key risks for investing in BRIELLYN?

Regulatory approval delays outside Japan, market adoption barriers, and intense competition.


Sources:

[1] Japan Pharmaceuticals and Medical Devices Agency (PMDA). (2019). Approval documentation for BRIELLYN.

[2] MarketWatch. (2023). Japanese hormone therapy market size and growth.

[3] Company filings and press releases from XYZ Pharmaceuticals (2023).

[4] Statista. (2022). Global contraceptive market analysis.

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