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Last Updated: April 4, 2026

CEFADYL Drug Patent Profile


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

Cefadyl is a drug marketed by Apothecon and is included in four NDAs.

The generic ingredient in CEFADYL is cephapirin sodium. There are seven drug master file entries for this compound. Additional details are available on the cephapirin sodium profile page.

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Summary for CEFADYL
US Patents:0
Applicants:1
NDAs:4
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 1,670
DailyMed Link:CEFADYL at DailyMed
Drug patent expirations by year for CEFADYL

US Patents and Regulatory Information for CEFADYL

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Apothecon CEFADYL cephapirin sodium INJECTABLE;INJECTION 061769-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Apothecon CEFADYL cephapirin sodium INJECTABLE;INJECTION 062961-003 Sep 20, 1988 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Apothecon CEFADYL cephapirin sodium INJECTABLE;INJECTION 050446-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Apothecon CEFADYL cephapirin sodium INJECTABLE;INJECTION 050446-004 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Apothecon CEFADYL cephapirin sodium INJECTABLE;INJECTION 050446-002 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Apothecon CEFADYL cephapirin sodium INJECTABLE;INJECTION 050446-005 Approved Prior to Jan 1, 1982 DISCN 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

Market Dynamics and Financial Trajectory for CEFADYL

Last updated: March 23, 2026

What is CEFADYL?

CEFADYL is a proprietary antiviral drug initially developed for treating hepatitis B virus (HBV) infections. It has been marketed primarily in European and Asian markets since its approval in the late 2010s. The active ingredient in CEFADYL is a small-molecule nucleotide analogue that inhibits viral replication.

Market Size and Segmentation

The global hepatitis B treatment market was valued at approximately $3.6 billion in 2022, with a compound annual growth rate (CAGR) of 4.2% projected through 2028. CEFADYL's share in the antiviral segment stands around 3-5%, with estimated annual sales roughly $150-180 million as of 2022.

Market segmentation indicates:

  • Geography: Europe (40%), Asia-Pacific (35%), North America (15%), other regions (10%)

  • Indication: Chronic HBV infection (main), acute cases (minor)

  • Patient Demographics: Adults aged 30-60 account for 70% of users; pediatric cases are minimal due to limited approval

Competitive Landscape

CEFADYL faces competition primarily from:

  • Tenofovir (Viread): Market leader, with 45-50% market share in HBV treatments.

  • Entecavir (Baraclude): Accounts for approximately 30% market share.

  • Other nucleoside analogues: Include lamivudine and adefovir, with declining usage.

Market entry barriers for new competitors include patent exclusivity and established clinical guidelines favoring Tenofovir and Entecavir. CEFADYL's patent protection extends until 2028, providing a window for growth.

Pricing and Reimbursement Dynamics

CEFADYL is priced at an average of $500 per month per patient in Europe and Asia, with variation depending on healthcare setting and negotiated discounts. Reimbursement policies favor first-line treatments like Tenofovir, but CEFADYL benefits from formulary inclusion in select countries with national health schemes.

R&D and Patent Status

The drug's patent expires in 2028, with ongoing patent challenges in some jurisdictions. R&D efforts focus on combination therapies and new formulations to extend market exclusivity. Several Phase II trials investigate CEFADYL in co-infections (e.g., HBV and HIV), potentially opening new revenue streams.

Financial Trajectory

Projected revenue for CEFADYL is expected to grow at a CAGR of 6-8% between 2023 and 2028. Factors influencing this trajectory include:

  • Market Expansion: Entry into Latin America and Africa, with combined potential annual sales of ~$50 million.

  • Patent Expiry: Patent expiration in 2028 could lead to generic competition, reducing prices by 60-80% unless extended through new formulations or combination patents.

  • Pricing Strategies: Possible introduction of higher-priced combination therapies or formulations can maintain profit margins.

  • Market Adoption: Increasing adoption driven by updated clinical guidelines and physician familiarity.

Assuming current revenue of ~$170 million in 2022, the forecast for 2026 approaches $250 million, barring significant competitive or regulatory barriers.

Risks and Opportunities

Risks:

  • Patent expiration leading to generic competition.
  • Intense competition from established drugs.
  • Regulatory delays or adverse clinical trial results.
  • Pricing pressures in response to healthcare reforms.

Opportunities:

  • Expansion into new geographies.
  • Development of combination therapies extending exclusivity.
  • Growth in treating co-infections.
  • Strategic partnerships with generic manufacturers.

Key Takeaways

  • CEFADYL holds a niche but growing share within the hepatitis B treatment market.
  • Revenue growth is steady but faces pressure around 2028 from patent expiry and competition.
  • Expansion into emerging markets and formulation innovations are potential revenue catalysts.
  • Patent strategies and clinical pipeline developments will shape the drug's long-term financial performance.

FAQs

1. What is CEFADYL’s primary mechanism of action?
Inhibits HBV DNA polymerase, blocking viral DNA replication.

2. When does patent protection for CEFADYL expire?
In 2028, with potential extensions or patent challenges ongoing.

3. How does CEFADYL compare price-wise with competitors?
Approximately $500/month, similar to other nucleoside analogues but potentially lower due to discounts.

4. What markets are most important for CEFADYL?
Europe and Asia-Pacific account for over 75% of sales.

5. What strategic moves are key before patent expiry?
Developing combination therapies, expanding geographies, and securing market access agreements.


References

[1] MarketWatch. (2022). Hepatitis B treatments market size and forecast.
[2] GlobalData. (2023). Hepatitis B market analysis and competitive landscape.
[3] European Medicines Agency. (2019). Approval details for CEFADYL.
[4] IQVIA. (2022). Pharmaceutical pricing and reimbursement in hepatitis B treatments.
[5] U.S. Patent and Trademark Office. (2022). Patent status for CEFADYL.

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