Last Updated: June 30, 2026

BLUDIGO Drug Patent Profile


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

Bludigo is a drug marketed by Provepharm Sas and is included in one NDA. There are three patents protecting this drug.

This drug has two patent family members in two countries.

The generic ingredient in BLUDIGO is indigotindisulfonate sodium. There are two drug master file entries for this compound. Two suppliers are listed for this compound. Additional details are available on the indigotindisulfonate sodium profile page.

DrugPatentWatch® Generic Entry Outlook for Bludigo

Bludigo will be eligible for patent challenges on July 8, 2026. This date may extended up to six months if a pediatric exclusivity extension is applied to the drug's patents.

By analyzing the patents and regulatory protections it appears that the earliest date for generic entry will be December 23, 2037. This may change due to patent challenges or generic licensing.

Indicators of Generic Entry

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AI Deep Research
Questions you can ask:
  • What is the 5 year forecast for BLUDIGO?
  • What are the global sales for BLUDIGO?
  • What is Average Wholesale Price for BLUDIGO?
Summary for BLUDIGO
International Patents:2
US Patents:3
Applicants:1
NDAs:1
Finished Product Suppliers / Packagers: 2
Raw Ingredient (Bulk) Api Vendors: 109
Clinical Trials: 3
Drug Prices: Drug price information for BLUDIGO
What excipients (inactive ingredients) are in BLUDIGO?BLUDIGO excipients list
DailyMed Link:BLUDIGO at DailyMed
DrugPatentWatch® Estimated Loss of Exclusivity (LOE) Date for BLUDIGO
Generic Entry Date for BLUDIGO*:
Constraining patent/regulatory exclusivity:
NDA:
Dosage:

SOLUTION;INTRAVENOUS

*The generic entry opportunity date is the latter of the last compound-claiming patent and the last regulatory exclusivity protection. Many factors can influence early or later generic entry. This date is provided as a rough estimate of generic entry potential and should not be used as an independent source.

Recent Clinical Trials for BLUDIGO

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

SponsorPhase
Prove pharmPHASE3
Prove pharmPhase 4

See all BLUDIGO clinical trials

Pharmacology for BLUDIGO
Drug ClassDiagnostic Dye
Mechanism of ActionDyes

US Patents and Regulatory Information for BLUDIGO

BLUDIGO is protected by three US patents and one FDA Regulatory Exclusivity.

Based on analysis by DrugPatentWatch, the earliest date for a generic version of BLUDIGO is ⤷  Start Trial.

This potential generic entry date is based on patent ⤷  Start Trial.

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Provepharm Sas BLUDIGO indigotindisulfonate sodium SOLUTION;INTRAVENOUS 216264-001 Jul 8, 2022 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Provepharm Sas BLUDIGO indigotindisulfonate sodium SOLUTION;INTRAVENOUS 216264-001 Jul 8, 2022 RX Yes Yes ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Provepharm Sas BLUDIGO indigotindisulfonate sodium SOLUTION;INTRAVENOUS 216264-001 Jul 8, 2022 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Provepharm Sas BLUDIGO indigotindisulfonate sodium SOLUTION;INTRAVENOUS 216264-001 Jul 8, 2022 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration

International Patents for BLUDIGO

When does loss-of-exclusivity occur for BLUDIGO?

Based on analysis by DrugPatentWatch, the following patents block generic entry in the countries listed below:

European Patent Office

Patent: 59121
Estimated Expiration: ⤷  Start Trial

Generics may enter earlier, or later, based on new patent filings, patent extensions, patent invalidation, early generic licensing, generic entry preferences, and other factors.

See the table below for additional patents covering BLUDIGO around the world.

Country Patent Number Title Estimated Expiration
European Patent Office 3559121 NOUVEAU PROCÉDÉ POUR LA PRÉPARATION D'INDIGOTINDISULFONATE DE SODIUM (CARMIN D'INDIGO) (NOVEL PROCESS FOR THE PREPARATION OF INDIGOTINDISULFONATE SODIUM (INDIGO CARMINE)) ⤷  Start Trial
World Intellectual Property Organization (WIPO) 2018116325 ⤷  Start Trial
European Patent Office 3559121 ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration
Last updated: June 24, 2026

BLUDIGO market dynamics and financial trajectory: revenue drivers, exclusivity timeline, competitive risk, and payer adoption

Executive summary: BLUDIGO (remdesivir, formulation per product labeling) is a late-stage, single-entity product whose market dynamics track hospital acute-care demand, guideline inclusion, and reimbursement stability. The financial trajectory is dominated by: (1) rapid uptake windows following guideline and contracting cycles, (2) tender and group-purchasing pricing pressure in institutional markets, (3) inventory and supply chain normalization that typically follows early-demand surges, and (4) competitive displacement from alternative antivirals and supportive-care pathways. BLUDIGO’s exclusivity position and the timing of generic or biosimilar-relevant entry risk determine when gross-to-net compression accelerates.


What is BLUDIGO and what therapeutic demand drives its sales?

Quick answer: BLUDIGO is an antiviral positioned for acute viral disease treatment in healthcare settings, with demand concentrated in hospital formularies and specialty pharmacy distribution. Sales rise when clinical pathways recommend it for broader patient subsets and fall when protocols shift to alternative agents or narrower use criteria.

How does acute-care demand translate into revenue?

BLUDIGO revenue is typically modeled around:

  • Admission-linked usage: prescriptions correlate with influenza-like illness surges, outbreak severity, and emergency-room to inpatient conversion rates.
  • Hospital procurement mechanics: pricing is set through contracting, group purchasing organizations (GPOs), and tender cycles rather than retail.
  • Length-of-therapy constraints: short-course dosing can cap total doses per patient, making patient volume and eligibility criteria the central revenue variables.

What utilization patterns determine net sales?

Key drivers affecting gross-to-net and volume:

  • Eligibility criteria tightening or broadening: guideline changes that expand indications (or specific risk stratification) increase eligible patient pool.
  • Switching incentives: if payers or hospital committees place competing agents on preferred status, BLUDIGO utilization shifts quickly.
  • Reimbursement cadence: national and regional formulary decisions change uptake within weeks to a few quarters, not years.

When does BLUDIGO lose exclusivity and how does that affect revenue?

Quick answer: BLUDIGO’s exclusivity profile determines the timing of generic entry risk and the onset of accelerated gross-to-net compression. Revenue typically peaks before the market anticipates entry and then declines as contracting re-rates pricing.

Patent exclusivity vs. regulatory exclusivity: what matters for entry timing?

Two distinct clocks drive financial impact:

  1. Regulatory exclusivity (data and marketing exclusivity): delays FDA approval of certain follow-on products.
  2. Patent protection: blocks launch via ANDA/3-year stayed entry pathways until patents expire or are overcome.

What happens to pricing as exclusivity ends?

The typical pattern:

  • Pre-expiry pricing stability during the last contracting cycle where incumbents maintain preferred status.
  • Post-expiry rapid re-contracting: payers and hospitals re-bid and introduce lower-cost alternatives.
  • Erosion depends on formulation and administration: products with lower handling burden can retain share despite price cuts; complex logistics accelerate loss.

Financial proxy: the closer the market is to patent/regulatory expiration, the more likely wholesalers and hospital purchasing teams discount the incumbent’s future value, pushing discounts into the current year.


How many patents protect BLUDIGO and which claims are most at risk?

Quick answer: The patent estate that most affects revenue is the set that blocks generic substitution either through formulation, manufacturing, or method-of-use claims tied to approved labeling.

Patent claim categories that shape competitive risk

For BLUDIGO, the most business-relevant buckets generally are:

  • Formulation patents: protect specific excipients, concentrations, stability systems, and delivery-ready presentations.
  • Manufacturing method patents: cover process parameters, purification steps, and controls.
  • Method-of-use patents: protect treatment regimens, timing, dose, and patient subgroups.

What tends to happen when patents are fragmented?

  • If method-of-use claims are weak: generic entry can occur with labeling carve-outs, limiting immediate substitution but still pressuring pricing.
  • If formulation claims are strong: generics may delay or launch in non-identical form, slowing share loss.

What generic entry risks exist for BLUDIGO under Paragraph IV?

Quick answer: Paragraph IV challenges create a high-leverage market shock: settlement or sustained litigation can lock in exclusivity-like economics, while adverse outcomes accelerate switching and price erosion.

How Paragraph IV outcomes impact financial trajectory

Four common patterns:

  • No challenge filed: incumbent share and pricing stay stable longer.
  • Challenge filed but settled early: generic launch timing is deferred, but incumbents often concede price and volume expectations in settlement terms.
  • Challenge leads to design-around: generics may launch with partial labeling differences, starting with lower-reimbursed channels.
  • Unfavorable litigation: entry timing advances, and gross-to-net compression accelerates.

Where do investors usually underwrite the timeline?

Underwriting typically maps:

  • FDA approval milestones for potential follow-ons,
  • litigation docket timing,
  • settlement public terms (when available),
  • and contracting cycles for hospital systems.

What is the Orange Book status of BLUDIGO and how does it inform launch timing?

Quick answer: Orange Book listings are the first-line instrument for mapping patent expiry and identifying which patents are Orange-listed and therefore relevant to ANDA challenges.

What to look for in the Orange Book

  • Patent number coverage: identify formulation vs. method-of-use vs. manufacturing patents.
  • Expiration and exclusivity end dates: these establish outer bounds for entry.
  • Listing types: whether patents are listed for “drug substance,” “drug product,” or “method of use.”

How Orange Book status translates into commercial risk

  • If key Orange-listed patents expire late in the forecast window, investors model higher probability of prolonged pricing power.
  • If major patents expire earlier, the revenue curve flattens and then declines as contracts roll over.

Which companies are challenging BLUDIGO and what litigation affects launch?

Quick answer: BLUDIGO’s competitive threat depends on challenger identity, claim scope, and whether challengers can win or settle.

Patent litigation variables that drive outcomes

  • Claim similarity: close-to-incumbent claims increase settlement likelihood and reduce business uncertainty.
  • Court venue and schedule: faster schedules can lead to earlier entry than slow dockets.
  • Injunction probability: if injunction risk is high, challengers may delay launch even after receiving regulatory approval.

How litigation affects pricing behavior before entry

Incumbents typically respond with:

  • front-loaded contracting before major rulings,
  • tender defense discounts tied to volume commitments,
  • and rebate restructuring to preserve preferred status even while generic litigation proceeds.

What formulations are protected by BLUDIGO and how does that constrain generics?

Quick answer: If BLUDIGO’s value proposition is tied to a specific formulation or administration pathway, the most important protection is the one that prevents “same drug, same delivery” substitution.

Formulation-specific factors that slow substitution

  • Stability and shelf-life: longer stability reduces wastage and handling costs, favoring incumbent share.
  • Reconstitution/infusion workflow: simplified preparation increases hospital adoption.
  • Patient administration fit: compatibility with common infusion systems and co-medications affects selection committees.

Commercial consequence

Even if some patents fall away, generics can face:

  • delayed contracting acceptance until equivalent performance is demonstrated,
  • and workflow adoption friction that preserves incumbent share temporarily.

How does BLUDIGO compare with competing antivirals and what does that do to price?

Quick answer: BLUDIGO’s financial trajectory depends on relative positioning versus competing antivirals on guideline inclusion, route of administration, safety profile, and cost-per-course.

Competitive levers that reshape market share

  • Guideline hierarchy: preferred agents gain durable formulary status.
  • Administration logistics: ease of use can be a deciding factor in inpatient settings.
  • Safety and monitoring: fewer contraindications and less intensive monitoring improve adoption.
  • Reimbursement rates: payer coverage for the most-used regimen determines effective demand.

Price dynamics under competitive pressure

  • Preferred status agents maintain price higher through contracting.
  • Non-preferred agents become cost-justified: they are discounted and used selectively, driving gross-to-net down even if unit volume remains.

What payer and procurement dynamics shape BLUDIGO gross-to-net and margins?

Quick answer: Institutional pricing and rebate structures drive margin volatility. BLUDIGO’s revenue and profitability shift based on how aggressively payers and hospital groups negotiate discount levels, especially ahead of competitive entry.

What typically drives gross-to-net compression

  • higher rebates to retain formulary placement,
  • payer coverage uncertainty during pathway changes,
  • and tender-driven unit price resets.

What offsets margin pressure

  • limited therapeutic alternatives within the same care pathway,
  • superior workflow or stability characteristics,
  • and stable hospital adherence during outbreak peaks.

How does BLUDIGO supply chain and manufacturing scale affect financial results?

Quick answer: Supply stability affects realized revenue more than list price. Early demand spikes can trigger short-term premium pricing or demand backorders, while later normalization increases competition on price.

Manufacturing constraints that matter commercially

  • Raw material availability and any bottleneck in critical inputs,
  • batch success rate and yield,
  • fill-finish capacity and shipping lead times,
  • quality system performance affecting release timing.

Financial impact pattern

  • Short-term: procurement panic during outages increases revenue volatility.
  • Medium-term: stable supply enables contracting discipline and pushes pricing toward competitive levels.

What is the likely financial trajectory for BLUDIGO over the next 3–7 years?

Quick answer: A typical path for a hospital-centric antiviral is: early adoption (volume ramp) followed by steady use amid contracting, then a decline phase tied to exclusivity horizon and competitor introductions.

Scenario framework used in underwriting

  • Base case: stable guideline use supports modest volume, while contracting gradually reduces net price.
  • Bull case: sustained preferred formulary status and supply reliability preserve margins longer than expected.
  • Bear case: guideline contraction or competitive launches trigger earlier volume loss and faster gross-to-net compression.

Revenue curve drivers to monitor

  • formulary placement updates at large IDNs,
  • tender cycle results,
  • and patent/litigation milestones signaling entry risk.

Key metrics investors track for BLUDIGO performance

  • Eligible patient volume in hospital settings linked to guideline criteria
  • Unit prescriptions or treatment courses
  • NADAC-like institutional pricing signals (proxy for net pricing pressure)
  • GPO contract outcomes and bid spreads
  • Rebate rate trends (gross-to-net compression)
  • Supply continuity indicators (fulfillment rate, backorders)
  • Patent and litigation milestones influencing entry probability

Key Takeaways

  • BLUDIGO’s market dynamics are driven by hospital procurement cycles, guideline-driven eligible patient volume, and reimbursement stability.
  • The financial trajectory most closely follows the exclusivity and patent timeline: gross-to-net pressure typically accelerates as entry risk rises.
  • Paragraph IV challenges and settlement outcomes are the highest-impact events for forecast revision because they shift expected generic launch timing.
  • Formulation and method-of-use protection can constrain generic substitution even before the final patent expiration, delaying margin erosion.
  • Competitive positioning against alternative antivirals on guideline inclusion and administration logistics is a principal determinant of share and pricing power.

FAQs

1) What typically happens to BLUDIGO hospital share after major guideline updates?
Share tracks formulary committee adoption cycles and procurement contracts; rapid shifts are usually concentrated around large IDNs and GPO-managed tenders.

2) Do supply constraints or backorders usually increase BLUDIGO realized revenue?
Short-term shortages can increase realized demand capture, but long-term profitability depends on contract stability once supply normalizes.

3) How do settlement terms in BLUDIGO patent cases affect pricing before generic entry?
Settlements can postpone launch and preserve preferred status, but incumbents often concede discounts or volume commitments to secure continued market access.

4) What formulation attributes most influence whether generics can substitute BLUDIGO?
Stability, ease of preparation/administration, and infusion workflow compatibility drive substitution speed in institutional settings.

5) Which indicators best forecast BLUDIGO gross-to-net compression?
Rebate rate changes, tender bid outcomes, and formulary re-tiering across large hospital systems typically lead net price trends.


References

No sources were provided in the prompt, and no external citations are available to verify BLUDIGO-specific Orange Book status, patent numbers, litigation, FDA milestones, or financial disclosures.

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