Last Updated: August 9, 2026

DUVOID Drug Patent Profile


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

Duvoid is a drug marketed by Chartwell Rx and is included in three NDAs.

The generic ingredient in DUVOID is bethanechol chloride. There are eight drug master file entries for this compound. Six suppliers are listed for this compound. Additional details are available on the bethanechol chloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Duvoid

A generic version of DUVOID was approved as bethanechol chloride by UPSHER SMITH LABS on June 1st, 2005.

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Summary for DUVOID
US Patents:0
Applicants:1
NDAs:3
Raw Ingredient (Bulk) Api Vendors: 84
Patent Applications: 1,560
DailyMed Link:DUVOID at DailyMed

US Patents and Regulatory Information for DUVOID

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Chartwell Rx DUVOID bethanechol chloride TABLET;ORAL 086262-001 Approved Prior to Jan 1, 1982 AA RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Chartwell Rx DUVOID bethanechol chloride TABLET;ORAL 086263-001 Approved Prior to Jan 1, 1982 AA RX No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Chartwell Rx DUVOID bethanechol chloride TABLET;ORAL 085882-003 Approved Prior to Jan 1, 1982 AA RX 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: June 28, 2026

DUVOID market dynamics and financial trajectory: sales drivers, payer signals, pricing pressure, and exclusivity timeline

DUVOID’s financial trajectory is driven by (1) the timing of FDA commercialization and channel build, (2) price and access decisions by payers, and (3) how quickly competitors secure formulary placement after launch. At this time, there is insufficient verifiable information to produce a complete market-dynamics and financial-trajectory profile that is accurate at the drug, label, maker, geography, and sales-metric level.

Is DUVOID approved by FDA and what is its Orange Book status?

A market-dynamics and financial-trajectory analysis for DUVOID requires a baseline of FDA status (approval date, dosage forms, label, NDA/BLA reference product), and whether DUVOID appears in the FDA’s Orange Book (active ingredient strength, applicant/holder, listed patents, patent use codes, and expiration data). No complete, citable Orange Book and FDA regulatory record for “DUVOID” is available in the provided information, so a definitive exclusivity, patent, and generic/biosimilar entry risk assessment cannot be produced.

What is DUVOID’s FDA approval pathway and label population?

Without an FDA regulatory dossier reference for DUVOID (NDA/BLA number, applicant, approval date, and indication scope), the payer and utilization model cannot be reliably constructed.

What patents are listed for DUVOID in the Orange Book?

A DUVOID-specific Orange Book extraction is required to build:

  • exclusivity timeline (data exclusivity, patent term extension if any),
  • listed patent expiration dates,
  • “at-risk” launch windows for Paragraph IV ANDAs,
  • reformulation and method-of-use risk.

No citable Orange Book listing data is present.

When does DUVOID lose exclusivity and what generic entry risks exist?

A credible generic-entry-risk model requires:

  • the earliest non-patent exclusivity expiration date,
  • the earliest listed patent expiration date,
  • whether any patents are method-of-use or formulation-related,
  • whether Paragraph IV certifications exist (or settlements),
  • the location-specific regulatory pathway (US only vs multiparty filings).

Because DUVOID’s Orange Book and FDA exclusivity facts are not available here, the exclusivity and generic entry timing cannot be stated.

Does DUVOID face Paragraph IV ANDA challenges?

Paragraph IV risk depends on certified patent listings and litigation dockets tied to the Orange Book. No DUVOID-specific Paragraph IV activity is provided.

What settlement agreements affect DUVOID launch timing?

Settlement impact requires documented agreements tied to relevant Orange Book patents and litigation. No such DUVOID-linked record is provided.

What is the competitive landscape for DUVOID and how do formulary dynamics affect sales?

Market dynamics in branded prescription drugs typically hinge on payer acceptance speed, net price after rebates, and tier placement. A DUVOID competitive landscape must include:

  • therapeutic class and mechanism of action,
  • direct labeled competitors,
  • formulary status by top PBMs,
  • step edits, prior authorization, and quantity limits,
  • estimated addressable population.

No DUVOID clinical category or competitor set is provided, so competitive and formulary dynamics cannot be quantified.

How strong is the patent estate for DUVOID and what patent types matter most?

For most brand-to-generic transitions, the key is whether the patent estate is dense across:

  • active ingredient compositions,
  • formulations (polymorphs, solid-state forms, excipients, salt forms),
  • methods of use (clinical treatment regimen),
  • manufacturing processes,
  • device or combination patents (if applicable).

No DUVOID patent estate dataset is provided, so strength scoring or litigation resilience cannot be generated.

Which companies are challenging DUVOID patents?

Challengers are identified through Paragraph IV ANDA filings, district court filings, and USPTO assignments tied to Orange Book patents. No DUVOID-linked challengers are provided.

What DUVOID formulations are protected and does reformulation change revenue risk?

Formulation and delivery-system patents can delay generic substitution and shift payer utilization through perceived differentiation. A DUVOID formulation-specific analysis requires the listed patent claims and product composition details by dosage form. Those data are not present.

Are there line extensions (dose, route, new salts/polymorphs)?

A line-extension map requires DUVOID product catalog entries and their patent linkage. No such DUVOID product and patent record is included.

What DUVOID manufacturing and IP barriers can block generic entry?

IP barriers typically include:

  • process patents,
  • key intermediate protections,
  • supplier constraints for critical starting materials,
  • data exclusivity for new strengths or indications.

No DUVOID manufacturing/process patent information is available.

How does DUVOID pricing and net revenue trajectory compare with peers in its therapeutic class?

A financial trajectory requires:

  • list price and WAC history,
  • net price and rebate estimates,
  • payer mix,
  • persistence and switching rates,
  • seasonal or adherence factors.

No DUVOID pricing or financial metrics are provided, and no therapeutic class comparator set can be determined from the input.

What is DUVOID’s FDA and reimbursement timeline and how does it translate into sales ramp?

Sales ramp models tie FDA milestones to commercialization:

  • approval date and launch date,
  • label expansion and supplementary indications,
  • REMS if any,
  • coverage decisions and coding readiness.

No DUVOID regulatory milestone timeline is available.

What generic launch scenarios exist for DUVOID and when could revenue decline accelerate?

Generic launch scenarios depend on:

  • earliest patent expiry and readiness,
  • likely launch design around remaining patents,
  • anticipated exclusivity blocks (non-patent exclusivity, data exclusivity for new formulations/indications),
  • court injunction outcomes.

Because DUVOID exclusivity and patent expirations are not established here, revenue decline timing cannot be modeled.

Key takeaways

  • DUVOID market-dynamics and financial-trajectory analysis requires a validated FDA/Orange Book foundation, patent linkage, and sales and pricing datasets.
  • The provided input contains no citable DUVOID regulatory identity (NDA/BLA, holder, approval and exclusivity dates), no Orange Book patent listing, and no financial metrics to support a complete, accurate assessment.

FAQs

  1. What FDA reference product and label does DUVOID map to, and what is its approval date?
  2. Is DUVOID listed in the FDA Orange Book, and what are the earliest patent expiry dates?
  3. Have any ANDA filers submitted Paragraph IV certifications for DUVOID-related Orange Book patents?
  4. What payer constraints (prior authorization, step edits, quantity limits) affect DUVOID uptake?
  5. What are the closest therapeutic alternatives to DUVOID, and how do their net prices and formulary positions compare?

References

(None. No DUVOID-specific FDA/Orange Book/patent or financial sources were provided.)

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