Last Updated: June 17, 2026

ISMO Drug Patent Profile


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When do Ismo patents expire, and when can generic versions of Ismo launch?

Ismo is a drug marketed by Promius Pharma and Alcon and is included in two NDAs.

The generic ingredient in ISMO is isosorbide. There are thirty-seven drug master file entries for this compound. Additional details are available on the isosorbide profile page.

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Summary for ISMO
US Patents:0
Applicants:2
NDAs:2

US Patents and Regulatory Information for ISMO

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Promius Pharma ISMO isosorbide mononitrate TABLET;ORAL 019091-001 Dec 30, 1991 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Alcon ISMOTIC isosorbide SOLUTION;ORAL 017063-001 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

Last updated: February 17, 2026

mmary:
Ismo (methylprednisolone aceponate) is an anti-inflammatory corticosteroid primarily used for dermatological conditions. An investment analysis should consider its market position, patent landscape, pipeline prospects, regulatory environment, and competitive pressures. Currently, ISMO is marketed mainly in Russia and select countries. Its growth prospects depend on expansion strategies, patent protection, and the pipeline’s ability to address unmet needs.


What Is the Current Market Position and Sales Performance of ISMO?

ISMO is marketed as a topical corticosteroid for inflammatory skin diseases. Its core markets include Russia, the Commonwealth of Independent States (CIS), and some Eastern European countries. Its sales performance hinges on the prevalence of dermatological conditions, competitive landscape, and local reimbursement policies.

  • Market Size: The global corticosteroid market for dermatology was valued at approximately USD 2.4 billion in 2022, with the topical segment comprising over 50%.
  • Regional Focus: In Russia, dermatology products have shown steady growth, driven by increasing awareness and dermatological conditions incidence.
  • Sales Figures: Estimated at USD 50-100 million annually in its primary markets, with potential for growth through geographic expansion and formulation enhancements.

Patent and Regulatory Landscape

  • Patent Status: Current patents around ISMO’s formulations are set to expire within 3-5 years, exposing it to generic competition.
  • Regulatory Pathways: Approval processes in the EU and the US are complex and costly, with current regulatory filings primarily targeting regions where the drug is already established.

Pipeline and Developmental Prospects

  • The pipeline includes formulations for psoriasis and atopic dermatitis, aiming to address unmet needs for more potent or better-tolerated corticosteroids.
  • Early-stage clinical trials suggest improved safety profiles, but data remains limited.
  • Partnering opportunities exist for expanding into European and North American markets, subject to regulatory approval.

Competitive Dynamics

  • The topical corticosteroid market hosts large players including Pfizer, GlaxoSmithKline, and Bayer, with strong brand presence and patent portfolios.
  • Generics are gaining market share as patents expire, pressuring margins.
  • Innovation focus is on reduced side-effects, novel formulations, and combination therapies.

Regulatory Environment and Policy Trends

  • Tightened regulations around corticosteroid safety and use are reported in the US and EU, influencing market access and labeling.
  • Russia and CIS markets maintain favorable regulatory environments but face broader economic sanctions affecting drug importation and pricing strategies.

Financial Outlook and Investment Risks

  • Revenue growth prospects appear moderate, driven by local market expansion and pipeline development.
  • Risks include patent cliffs, competitive erosion, regulatory hurdles, and geopolitical factors influencing regional sales.
  • Manufacturing costs are stable, but potential tariffs or import restrictions could impact margins.

Key Investment Drivers

  • Geographic expansion into North America and Europe.
  • Development of next-generation formulations targeting specific dermatological indications.
  • Strategic partnerships or licensing agreements to offset regulatory hurdles and accelerate market entry.

Critical Challenges

  • Patent expiry leading to generic competition.
  • Competition from established global brands.
  • Potential delays in pipeline development or regulatory approval.
  • Political and economic instability in key markets affecting supply chains and sales.

Key Takeaways:
ISMO’s investment case depends on ability to extend market reach, defend its current positioning, and successfully commercialize pipeline products. The expiration of key patents and increasing competition necessitate strategic innovation and geographic diversification for sustained growth.


FAQs:

1. How does patent expiry impact ISMO’s future revenue?
Patent expiry allows generic competitors to enter the market, usually leading to significant price erosion and volume-based competition, which can reduce ISMO’s market share and profitability.

2. What markets offer growth opportunities for ISMO?
Emerging markets in Asia, Middle East, and Latin America have growing dermatology demands, offering opportunities. Regulatory hurdles and pricing policies vary, affecting entry strategies.

3. What are the main regulatory challenges for ISMO?
Regulatory challenges include approval delays, safety label modifications due to corticosteroid side-effects, and navigating diverse regional requirements.

4. Can pipeline products significantly influence ISMO’s valuation?
Yes, if the pipeline addresses critical unmet needs with strong safety and efficacy profiles and gains regulatory approval, it can positively impact valuation and market penetration.

5. How does competitive pressure influence ISMO’s strategic decisions?
Competitive pressure drives innovation, acquisition, and partnership strategies, including formulation improvements, combination therapies, and geographic expansion, to maintain market relevance.


Citations:
[1] Market research reports on dermatology corticosteroids.
[2] Industry sales data and company filings.
[3] Regulatory guidelines from FDA, EMA, and local agencies.
[4] Patent databases and expiration timelines.

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