Last Updated: September 28, 2026

NUMORPHAN Drug Patent Profile


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

Numorphan is a drug marketed by Endo Pharms and is included in one NDA.

The generic ingredient in NUMORPHAN is oxymorphone hydrochloride. There is one drug master file entry for this compound. Nine suppliers are listed for this compound. Additional details are available on the oxymorphone hydrochloride profile page.

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  • What is the 5 year forecast for NUMORPHAN?
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  • What is Average Wholesale Price for NUMORPHAN?
Summary for NUMORPHAN
Recent Clinical Trials for NUMORPHAN

Identify potential brand extensions & 505(b)(2) entrants

SponsorPhase
M.D. Anderson Cancer CenterEarly Phase 1
National Cancer Institute (NCI)Early Phase 1
Endo PharmaceuticalsPhase 3

See all NUMORPHAN clinical trials

US Patents and Regulatory Information for NUMORPHAN

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Endo Pharms NUMORPHAN oxymorphone hydrochloride SUPPOSITORY;RECTAL 011738-004 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

NUMORPHAN market dynamics and financial trajectory: sales drivers, competitive pressure, and IP-driven risk

Last updated: July 8, 2026

NUMORPHAN’s market and financial trajectory depend on (1) whether it is an actively traded branded product in the U.S. or another jurisdiction, (2) the presence of FDA/Orange Book listings tying the brand to a specific NDA, and (3) the strength and remaining term of the patent estate covering the marketed strength, dosage form, and route. Without identifying the precise FDA product record (NDA/BLA), active ingredient, strength, dosage form, and current marketing authorization status by jurisdiction, market sizing, price, and exclusivity-to-generic timelines cannot be produced with fidelity.

H1: NUMORPHAN (drug): market dynamics and financial trajectory by jurisdiction, pricing, competition, and exclusivity

What is NUMORPHAN’s active ingredient and regulated product status by country?

Featured snippet answer: Market dynamics for NUMORPHAN hinge on which regulated product it is (FDA NDA or non-U.S. marketing authorization), what active ingredient it contains, and whether any U.S. exclusivity or listed patents exist for the same marketed dosage form and strength.

Is NUMORPHAN an FDA-approved U.S. product or a non-U.S. brand?

A complete financial trajectory requires:

  • Regulatory identity: NDA/BLA number (or non-U.S. dossier reference)
  • Market authorization status: active, discontinued, withdrawn, or replaced by another label
  • Filing history tied to launch year, label changes, and manufacturing site updates

What is the dosage form and strength that drive sales?

Sales volume and revenue are sensitive to:

  • Route of administration (oral, injectable, transdermal)
  • Strength tiers that map to payer formularies
  • Dispensing patterns and unit pack configurations

How do sales dynamics typically evolve for a NUMORPHAN brand in payer and channel markets?

Featured snippet answer: Branded pharmaceutical sales usually track a small number of repeatable variables: formulary placement, net price trend, contracting intensity, utilization, and competitive entry timing.

What drives demand: clinical role and substitution behavior

NUMORPHAN demand depends on:

  • Clinical positioning versus standard-of-care
  • How substitutable it is with generics or therapeutically equivalent alternatives
  • Switching likelihood due to safety/efficacy perception, administration convenience, or formulary rules

Net price trajectory: list price vs rebates and contracts

For branded products, financial trajectory generally reflects:

  • ASP trend pressure from PBM contracting and tendering
  • Rebates and payer-specific discounts
  • Changes in wholesaler inventory and channel fill

Channel structure: retail vs institutional mix

If NUMORPHAN is dispensed in:

  • Retail settings, volume rises with prescription growth and formulary access
  • Hospital/institutional settings, revenue depends on tender cycles and inventory stocking

Which competitive threats matter most: generic entry, authorized generics, or therapeutic substitutes?

Featured snippet answer: Revenue exposure typically spikes when a generic (or authorized generic) arrives for the exact marketed dosage form and strength, or when payer policies shift to lower-cost therapeutic substitutes.

What generic entry risks exist for NUMORPHAN?

To quantify generic entry risk, you need Orange Book listed patents, expiration dates, and any Paragraph IV filings. Without an identified NDA record for NUMORPHAN, the timing and number of generic entry opportunities cannot be stated.

How strong is the patent estate for NUMORPHAN (formulation, method-of-use, and manufacturing)?

A defensible patent-strength read requires:

  • Patent families by claim type: composition/formulation, method-of-use, and manufacturing/process
  • Remaining lives and expected carve-outs at expiry
  • Litigation history for each relevant patent family

How does NUMORPHAN compare with alternatives in the same therapeutic class?

Market share trajectory depends on:

  • Therapeutic class competition, not only direct brand competition
  • Clinical guideline inclusion and line-of-therapy position
  • Patent and exclusivity landscape relative to class peers

When does NUMORPHAN lose exclusivity and face generic erosion?

Featured snippet answer: The first generic erosion window is defined by the earliest of (1) U.S. regulatory exclusivity end, (2) expiration of Orange Book listed patents for the marketed product, and (3) any court-imposed or settlement-driven “launch protection” periods.

Exclusivity timelines needed for a launch forecast

A complete timeline requires:

  • Regulatory exclusivity type: NCE/3(b), orphan (if applicable), pediatric (if applicable), 7.5/5-year provisions, and any extension triggers
  • Patent expiry dates by jurisdiction
  • Enforcement actions or settlements affecting launch

What is the Orange Book status of NUMORPHAN and how many patents cover the marketed product?

Featured snippet answer: Orange Book status determines whether generics can file under Paragraph IV and whether they trigger 30-month stays or litigation windows.

How many patents cover NUMORPHAN and what claim types dominate?

A full count requires NDA-specific Orange Book parsing:

  • Patent numbers in force
  • Patent expiration dates
  • Which patents claim formulation, composition, methods, or devices

What patent litigation affects NUMORPHAN?

Litigation influences:

  • Whether generics launch at risk
  • Settlement-triggered “delayed entry” terms
  • Scope-of-infringement outcomes that limit what generics can produce

What regulatory pathway and FDA milestones shape NUMORPHAN’s financial trajectory?

Featured snippet answer: Manufacturing changes, label updates, and new formulations typically drive financial outcomes via new exclusivity opportunities or via abbreviated pathways for competitors.

Does NUMORPHAN’s NDA/BLA use a particular FDA approval pathway?

Financial implications hinge on whether the original approval was:

  • Standard NDA, 505(b)(1)
  • ANDA reliance on literature or bridging
  • 505(b)(2) with partial reliance that can create layered patent coverage

How do label changes affect revenue protection?

Label expansions or formulation changes can:

  • Re-anchor exclusivity and extend protection against certain generic formulations
  • Create additional barriers through new patent listings and new switching costs

How do NUMORPHAN’s manufacturing and supply constraints affect revenue?

Featured snippet answer: For mature brands, supply shocks and manufacturing deviations can temporarily boost pricing but usually create long-run revenue loss through customer churn and payer exceptions.

Contract manufacturing and site qualification risks

For injectable or controlled distribution products:

  • Supplier qualification can delay generic substitution or brand continuity
  • Sterility or quality events can trigger recalls or holdbacks

Inventory cycles and wholesaler buying patterns

Channel behavior affects reported sales:

  • Pull-through lag after launches
  • Restocking after shortages
  • Discounting to clear inventory near expiry

What is the investment and licensing landscape for NUMORPHAN?

Featured snippet answer: Licensing activity is a function of remaining patent life, enforceability, and distribution reach.

What licensing deals are common for products like NUMORPHAN?

A market-credible licensing map would list:

  • Co-promotion and distribution deals by region
  • Patent assignment or exclusive license transfers
  • Territory carve-outs and value-based agreements

Are there biosimilar-style risks for NUMORPHAN?

If NUMORPHAN is biologic-like (not established here), biosimilar frameworks matter. Without confirmed product class (small molecule vs biologic), biosimilar risk cannot be applied correctly.

NUMORPHAN vs peer products: how do patent and launch dynamics compare?

Featured snippet answer: Competitive outcomes align with who has the earliest “clean” launch date and who maintains the tightest formulation and method-of-use coverage.

Direct comparison framework needed for a peer set

A proper comparison would include:

  • Active ingredient and strength mapping
  • Dosage form equivalency
  • Patent expiry alignment
  • Settlement history and launch timing

Key Takeaways

  • NUMORPHAN’s market dynamics and financial trajectory cannot be stated in a way that supports business decisions without a verified regulatory product identity (NDA/BLA or non-U.S. marketing authorization record), because exclusivity, Orange Book coverage, generic entry timing, and litigation are NDA-specific.
  • A defensible revenue and risk view requires: dosage form and strength alignment, Orange Book patent listing count and claim types, and current marketing status by jurisdiction.
  • Once the product record is fixed, the financial trajectory typically follows a repeatable pattern: stable branded growth while protected, then step-down at earliest patent/exclusivity expiry, with additional volatility tied to Paragraph IV litigation and settlement-driven launch timing.

FAQs

  1. How can investors estimate NUMORPHAN revenue exposure to generic entry without knowing the NDA?
  2. What patent claim types most often delay generic substitution for small-molecule brands like NUMORPHAN?
  3. When do settlements typically shift launch dates for Paragraph IV challengers?
  4. How do label and formulation changes affect Orange Book listings and downstream generic approval risk?
  5. What channel indicators best predict branded sales decline before first generic launch?

References

No sources are provided because the specific regulatory identity and bibliographic record for “NUMORPHAN” are not established in the prompt.

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