Last Updated: June 17, 2026

BLENOXANE Drug Patent Profile


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Which patents cover Blenoxane, and when can generic versions of Blenoxane launch?

Blenoxane is a drug marketed by Bristol Myers Squibb and is included in one NDA.

The generic ingredient in BLENOXANE is bleomycin sulfate. There are six drug master file entries for this compound. Five suppliers are listed for this compound. Additional details are available on the bleomycin sulfate profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Blenoxane

A generic version of BLENOXANE was approved as bleomycin sulfate by HOSPIRA on March 10th, 2000.

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  • What is the 5 year forecast for BLENOXANE?
  • What are the global sales for BLENOXANE?
  • What is Average Wholesale Price for BLENOXANE?
Summary for BLENOXANE
Recent Clinical Trials for BLENOXANE

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

SponsorPhase
AIDS Malignancy ConsortiumPhase 1
The EMMES CorporationPhase 1
University of California, Los AngelesPhase 1

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US Patents and Regulatory Information for BLENOXANE

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Bristol Myers Squibb BLENOXANE bleomycin sulfate INJECTABLE;INJECTION 050443-001 Approved Prior to Jan 1, 1982 DISCN Yes No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Bristol Myers Squibb BLENOXANE bleomycin sulfate INJECTABLE;INJECTION 050443-002 Sep 7, 1995 DISCN Yes 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: June 2, 2026

Blenoxane (Porfimer Sodium) Market Dynamics, Financial Trajectory, and Exclusivity Outlook

Blenoxane market and financial trajectory hinges on limited, legacy use in bladder cancer therapy and a constrained competitive field driven by generics and alternative modalities. Public commercial reporting for “Blenoxane” is sparse and fragmented by geography, dose form, and distribution channels. As a result, the practical market view is that of a niche, low-growth product with revenue durability tied to hospital procurement, remaining patent/exclusivity protection where applicable, and continued clinician preference versus competing intravesical agents and procedural alternatives.

What is Blenoxane and how is it sold in the market?

Featured snippet: Blenoxane is a branded porfimer sodium product used for photodynamic therapy, historically in oncologic and ophthalmic settings; sales are typically concentrated in specialized hospital accounts and procedure-driven demand.

Core product profile

  • Active ingredient: Porfimer sodium
  • Typical administration: Intravenous or other routes depending on indication and protocol; photodynamic therapy protocols follow light activation
  • Therapeutic focus: Oncology and, in some markets, related indications under photodynamic therapy frameworks

Commercial selling motion

  • Account type: Tertiary care centers, urology and oncology departments, specialty ophthalmology clinics (where applicable)
  • Buying behavior: Hospital procurement cycles, formulary placement, tendering by region
  • Service dependency: Photodynamic therapy requires specialized equipment and clinical workflow, which affects switching and throughput

Geographic commercialization pattern

  • Demand is regionally uneven and often mapped to:
    • availability of photodynamic therapy infrastructure
    • local clinical guideline adoption
    • presence or absence of competing agents and device-linked systems

How big is the Blenoxane market and what are the demand drivers?

Featured snippet: Blenoxane demand tracks photodynamic therapy utilization and the incidence and treatment patterns of the underlying diseases rather than broad chronic-market growth.

Demand drivers

  • Procedure volumes: Photodynamic therapy utilization depends on patient selection, timing, and equipment access
  • Clinical adoption: Where clinicians prefer porfimer-based workflows, demand holds; where alternative phototherapeutics or regimens dominate, demand declines
  • Healthcare reimbursement: Hospital reimbursement policies drive utilization intensity
  • Supply reliability: Any manufacturing or supply interruptions can disproportionately affect niche drug sales

Key inhibitors to growth

  • Low addressable patient populations relative to large oncology drugs
  • Workflow lock-in: Even if the drug has comparable efficacy, switching protocols and staff training can slow adoption
  • Competition from alternative treatments: Standard-of-care modalities can displace photodynamic therapy

What competitors matter most versus Blenoxane?

Featured snippet: Blenoxane faces competition primarily from other photodynamic therapy agents and from non-drug procedural or regimen alternatives used in the same clinical pathways.

Competition map by mechanism

  • Other photodynamic therapy agents
    • Competing photosensitizers with different dosing schedules or activation wavelengths
  • Alternative oncologic treatments
    • Surgery, intravesical therapies (for bladder pathways in relevant geographies), radiotherapy, and systemic therapies depending on indication
  • Device and protocol competition
    • Even with similar photosensitizers, changes in light delivery systems and protocol preferences can shift drug share

Competitive effects on pricing

  • Niche competition typically results in:
    • price pressure where comparable alternatives exist
    • tender-based contracting that compresses net prices
    • accelerated switching when supply or reimbursement is unfavorable

When does Blenoxane face exclusivity and patent expiration risk?

Featured snippet: Blenoxane’s market durability is dominated by the remaining scope and timing of patents tied to porfimer sodium and its approved use and/or specific formulations, if any.

Exclusivity framework

  • Patent estate: Composition-of-matter, formulation, dosing regimen, and method-of-use patents can drive entry barriers
  • Regulatory exclusivity: Orphan designation and related protections can affect timelines in specific indications where applicable
  • Geographic variance: Exclusivity differs by country due to different patent filings, grant dates, and regulatory milestones

Practical implication for investors and licensors

  • For a niche product, a single key patent expiration or settlement can cause abrupt share loss via:
    • generic substitution
    • tender price undercutting
    • protocol renegotiation in hospital accounts

What is the Paragraph IV and generic entry risk for Blenoxane?

Featured snippet: For legacy niche oncology injectables like porfimer sodium, generic entry risk is typically driven by the strength and remaining term of Orange Book-listed patents (where present) and by the feasibility of bioequivalence and manufacturing comparability.

Generic pathways that usually matter

  • ANDA with Hatch-Waxman
    • If the product is small-molecule and listed patents can be challenged
  • Product-specific constraints
    • Photodynamic therapy drugs can have complexity in impurities, manufacturing controls, and clinical protocol fit

What usually determines whether generics win

  • Tender price advantage
  • Hospital comfort with switching photosensitizers
  • Evidence expectations for comparability and clinical workflow compatibility

What is the Orange Book status of Blenoxane?

Featured snippet: Orange Book status determines whether FDA lists patents relevant to approved products and directly influences Hatch-Waxman challenge and generic launch timing.

Why Orange Book listing matters commercially

  • If Blenoxane has still-listed patents that cover:
    • composition-of-matter
    • formulation
    • method of use
    • combination with devices or specific instructions then generic launch timing is constrained absent carve-outs, settlements, or successful challenges.

Market impact

  • Orange Book-driven exclusivity creates a predictable “entry calendar” for hospital procurement and licensing negotiations.
  • If listings have aged out, market pricing shifts quickly and distribution consolidates around whichever supplier wins tenders.

What patent litigation affects Blenoxane’s competitive landscape?

Featured snippet: Patent litigation for niche drugs typically concentrates around remaining formulations, method-of-use claims, and manufacturing/process controls.

Litigation pathways that often show up

  • Infringement suits triggered by ANDA filings
  • Settlement agreements that delay generic entry in exchange for payment or license terms
  • Disputes over scope: labeling carve-outs and method-of-use limitations

How litigation changes revenue trajectory

  • Pending cases can:
    • postpone generic entry and protect pricing
    • increase uncertainty for wholesalers and hospital contract planning
  • Settlements can:
    • lock in a predictable protected window
    • then trigger step-function demand shifts at the settlement end date

How does Blenoxane compare with other photodynamic therapy products on market and pricing?

Featured snippet: Blenoxane’s commercial pattern is typically less about broad utilization and more about protocol share in specialized centers, making switching events higher-impact on net revenue.

Key comparison dimensions

  • Dosing schedule: Higher regimen complexity can reduce adoption
  • Administration workflow: Longer preparation times can constrain throughput
  • Efficacy and labeling fit: Alignment with guideline-recommended indications affects use
  • Tender pricing: Net price outcomes hinge on regional contracting

Expected direction of competitive effects

  • When a competing agent enters or when a generic substitutes, pricing pressure rises quickly in tender jurisdictions.
  • Where clinicians and hospitals retain device and protocol compatibility with porfimer sodium, substitution can be slower.

What financial trajectory should be expected for Blenoxane?

Featured snippet: The financial profile of a legacy photodynamic therapy brand generally follows niche oncology patterns: modest topline with revenue durability until exclusivity lapses, then accelerated erosion under competition.

Baseline trajectory (typical pattern for this asset class)

  • Pre-entry phase: Stable or slowly declining unit demand, price protection in established contracts
  • Exclusivity/litigation inflection: Step-down in protected supply and hospital tender outcomes
  • Post-entry phase: Multiple supplier presence drives net price compression
  • Long tail: Remaining demand persists where protocols and clinical comfort favor the branded drug or where substitution is operationally difficult

What to watch in quarterly reporting

  • Net sales trend: Look for step changes rather than gradual erosion
  • Geography mix: Market share shifts show up first in tender-heavy regions
  • Gross margin: Discounting and supply chain renegotiations can change margin faster than volume
  • Inventory and supply terms: Niche drugs show sharper volatility during supply disruptions

How do commercial deals and channel structure affect Blenoxane revenue?

Featured snippet: Hospital procurement structure and contract terms dominate net revenue for niche injectables.

Channel considerations

  • Wholesaler stocking: can smooth short-term volatility but shifts risk to distributors
  • Tender governance: multi-year procurement agreements can lock in pricing and volume
  • Formulary status: renewed approvals keep the drug in rotation; formulary removals reduce utilization

Licensing and supply arrangements

  • If Blenoxane is distributed under regional licensing, revenue can be:
    • insulated or exposed depending on distribution agreements
    • sensitive to regional exclusivity and manufacturing capacity commitments

What regulatory milestones influence Blenoxane’s ongoing market position?

Featured snippet: Label maintenance, manufacturing compliance, and post-approval changes drive supply continuity and minimize regulatory disruptions.

Regulatory risks

  • Manufacturing site changes
  • Recall or quality events
  • Labeling updates tied to safety communications or revised clinical protocols

How regulation feeds economics

  • Supply constraints can cause lost treatment opportunities, which is material in procedure-driven use.
  • Quality events typically trigger short-term revenue drops and longer-term brand discounting during re-contracting.

Key Takeaways

  • Blenoxane’s market is niche and procedure-dependent, with demand shaped by photodynamic therapy utilization, clinical protocol selection, and hospital tendering.
  • Revenue trajectory typically shows stability until a patent/exclusivity inflection, followed by faster net price erosion once generic or comparable alternatives enter.
  • The competitive impact is less about incremental efficacy and more about switchability within specialized clinical workflows and the tender-driven net price environment.
  • Patent status and Orange Book listings (where present) determine generic entry timing and therefore the window for revenue durability.
  • Financial performance should be evaluated for step changes around exclusivity, litigation, and settlement endpoints rather than expecting smooth linear decline.

FAQs

1) How do hospital tender cycles typically change net pricing for niche oncology injectables like Blenoxane?
Tender calendars, contract renegotiation frequency, and preferred supplier lists usually drive stepwise net price compression when competition increases.

2) What typically determines whether a hospital will switch from a branded photosensitizer to a generic?
Protocol compatibility, clinician comfort, supply reliability, and evidence and labeling fit for the intended indication.

3) What are the main drivers of revenue volatility for photodynamic therapy products?
Supply continuity, equipment access at treatment sites, and sudden tender outcomes that re-set pricing.

4) How do method-of-use or formulation patents affect generic launch timing?
They can block labeling changes needed for generic substitution and can force carve-outs that delay or limit clinical switching.

5) What commercial signals indicate that a patent settlement has shifted the generic entry timeline?
Wholesaler price reductions, contracting changes by regional distributors, and early tender language allowing substitution at or after the settlement date.

References

  1. FDA. Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations. U.S. Food and Drug Administration.
  2. FDA. Hatch-Waxman Drug Products: ANDA and Patent Certification Guidance and Overview. U.S. Food and Drug Administration.
  3. FDA. Drugs@FDA. U.S. Food and Drug Administration.

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