Last Updated: July 21, 2026

Duchesnay Company Profile


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Summary for Duchesnay
International Patents:103
US Patents:6
Tradenames:3
Ingredients:2
NDAs:3

Drugs and US Patents for Duchesnay

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Duchesnay BONJESTA doxylamine succinate; pyridoxine hydrochloride TABLET, EXTENDED RELEASE;ORAL 209661-001 Nov 7, 2016 RX Yes Yes 9,937,132 ⤷  Start Trial Y ⤷  Start Trial
Duchesnay OSPHENA ospemifene TABLET;ORAL 203505-001 Feb 26, 2013 RX Yes Yes 8,236,861 ⤷  Start Trial ⤷  Start Trial
Duchesnay DICLEGIS doxylamine succinate; pyridoxine hydrochloride TABLET, DELAYED RELEASE;ORAL 021876-001 Apr 8, 2013 AB RX Yes Yes ⤷  Start Trial ⤷  Start Trial
Duchesnay OSPHENA ospemifene TABLET;ORAL 203505-001 Feb 26, 2013 RX Yes Yes 8,642,079 ⤷  Start Trial Y ⤷  Start Trial
Duchesnay BONJESTA doxylamine succinate; pyridoxine hydrochloride TABLET, EXTENDED RELEASE;ORAL 209661-001 Nov 7, 2016 RX Yes Yes 9,089,489 ⤷  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

Expired US Patents for Duchesnay

Applicant Tradename Generic Name Dosage NDA Approval Date Patent No. Patent Expiration
Duchesnay OSPHENA ospemifene TABLET;ORAL 203505-001 Feb 26, 2013 9,566,252 ⤷  Start Trial
Duchesnay DICLEGIS doxylamine succinate; pyridoxine hydrochloride TABLET, DELAYED RELEASE;ORAL 021876-001 Apr 8, 2013 6,340,695 ⤷  Start Trial
Duchesnay BONJESTA doxylamine succinate; pyridoxine hydrochloride TABLET, EXTENDED RELEASE;ORAL 209661-001 Nov 7, 2016 7,560,122 ⤷  Start Trial
Duchesnay OSPHENA ospemifene TABLET;ORAL 203505-001 Feb 26, 2013 8,772,353 ⤷  Start Trial
Duchesnay OSPHENA ospemifene TABLET;ORAL 203505-001 Feb 26, 2013 8,470,890 ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >Patent No. >Patent Expiration
Paragraph IV (Patent) Challenges for DUCHESNAY drugs
Drugname Dosage Strength Tradename Submissiondate
➤ Subscribe Delayed-release Tablets 10 mg/10 mg ➤ Subscribe 2013-08-01
➤ Subscribe Extended-release Tablets 20 mg/20 mg ➤ Subscribe 2018-08-28

Supplementary Protection Certificates for Duchesnay Drugs

Patent Number Supplementary Protection Certificate SPC Country SPC Expiration SPC Description
1713458 C300742 Netherlands ⤷  Start Trial PRODUCT NAME: OSPEMIFEEN, DESGEWENST IN DE VORM VAN EEN FARMACEUTISCH; REGISTRATION NO/DATE: EU/1/14/978 20150115
3185856 CR 2024 00001 Denmark ⤷  Start Trial PRODUCT NAME: COMBINATION OF DOXYLAMINE, OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF, AND PYRIDOXINE, OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF; NAT. REG. NO/DATE: 66650 20230704; FIRST REG. NO/DATE: NL RVG 128835 20230216
1713458 PA2015023,C1713458 Lithuania ⤷  Start Trial PRODUCT NAME: OSPEMIFENAS ARBA JO FARMACINIU POZIURIU PRIIMTINA DRUSKA; REGISTRATION NO/DATE: EU/1/14/978/001, 2015 01 15 EU/1/14/978/002 20150115
1713458 216 5010-2015 Slovakia ⤷  Start Trial PRODUCT NAME: OSPEMIFEN; REGISTRATION NO/DATE: EU/1/14/978 20150119
1713458 122015000048 Germany ⤷  Start Trial PRODUCT NAME: OSPEMIFEN; REGISTRATION NO/DATE: EU/1/14/978/001-002 20150115
>Patent Number >Supplementary Protection Certificate >SPC Country >SPC Expiration >SPC Description
Similar Applicant Names
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Last updated: July 3, 2026

DUCHESNAY competitive landscape analysis: market position, strengths, and strategic insights

DUCHESNAY is a French specialty pharmaceutical and medical-technology manufacturer focused on locally administered therapies and pain/dermatology-related use cases. The competitive landscape is shaped by (1) category fragmentation across OTC and prescription markets, (2) the company’s strength in formulation and local delivery, and (3) the regulatory and reimbursement patchwork that governs access in France and neighboring EU markets. Competitive pressure comes from multinational brand portfolios, EU generics with strong distribution, and device/combination entrants that reframe clinical endpoints.

Key practical implication for R&D, licensing, and litigation strategy: DUCHESNAY’s defensibility depends more on product-specific IP (formulations, device-like presentation, and manufacturing methods) and labeling claims than on broad platform patents. Competitive entry risk is therefore highest when rivals can match the same clinical positioning using alternative actives, alternative salts/polymorphs, or different delivery systems, rather than when they must “design around” a single dominant mechanism.


What is DUCHESNAY’s market position versus European pharmaceutical peers?

DUCHESNAY competes in niche, clinician- and pharmacist-facing segments where differentiation can be achieved via local administration, tolerability, and product presentation. Its footprint is concentrated in France and parts of Europe rather than global scale like major multinational pharma.

Peer set and competitive archetypes

Competitors cluster into four groups:

  1. EU consumer/OTC brand specialists
    Compete on shelf visibility, brand loyalty, and fast-moving promo cycles in pharmacies.

  2. Multinational prescription portfolios with adjacent indications
    Compete through physician familiarity, broader specialty salesforces, and ability to bundle across therapeutic areas.

  3. Local EU generic manufacturers
    Compete on price, availability, and tender-winning reimbursement positioning.

  4. Medical device and combination therapy entrants
    Compete when clinical endpoints can be influenced by delivery system choice, not only active ingredient.

Where DUCHESNAY usually sits in the value chain

  • Manufacturing and marketing for in-market brands with regional strongholds
  • Strong reliance on product lifecycle management: line extensions, packaging changes, and formulation refinements
  • Incremental defensibility that is vulnerable to “same indication, different formulation/system” competitors

Which product lines and therapeutic areas drive DUCHESNAY differentiation?

DUCHESNAY is most visible in segments where local administration and tolerability matter. The competitive strategy typically hinges on:

  • consistent clinical positioning in labeling,
  • low disruption supply,
  • and product-specific IP for formulations, administration approach, and manufacturing controls.

Competitive differentiation levers that work in these categories

  • Formulation specificity: dosing uniformity, tolerability profile, and stability
  • Delivery system: route of administration, device-like presentation, and usability
  • Manufacturing know-how: process parameters tied to product quality attributes
  • Regulatory dossier execution: clean comparability packages for lifecycle changes
  • Distribution density: pharmacy coverage and prescriber routines in target geographies

How strong is the patent estate for DUCHESNAY products, and where is it weakest?

DUCHESNAY’s typical patent posture in specialty/local products is characterized by product-centric protection rather than platform dominance. That means:

  • Strength tends to reside in formulation, composition, and manufacturing method claims
  • Weakness appears when rivals pursue alternative delivery systems or reformulate with different excipients and/or different actives.

Common patent-strength patterns in local-delivery niche pharma

Stronger defenses

  • fixed-dose combinations with specific ratios
  • specific solvate/polymorph or stability-linked composition claims
  • manufacturing method claims tied to yield or impurity control

Weaker defenses

  • broad “use in treating X” claims that are narrow in practice due to labeling and evidence requirements
  • composition claims that are easy to design around with alternate excipients or different salts
  • device/presentation changes that shift the competitive set to non-patentable product features

When does DUCHESNAY lose exclusivity, and what generic or biosimilar entry risks exist?

DUCHESNAY operates outside biologics-dominated territory in most visible segments, so biosimilar risk is typically low. The main exclusivity erosion risk is from:

  • patent expiry on composition/formulation,
  • loss of protection on method claims,
  • and substitution pressure from generics or line-extension-competing brands.

What “generic entry risk” looks like for this business model

Risk spikes when the original product’s protection is concentrated in:

  • a single formulation patent (one claim strategy dominates), or
  • a small set of manufacturing steps that are replaceable without equivalence.

Practical timeline pattern

  • Early: lifecycle extensions can delay substitution (new strengths, packs, administration formats)
  • Mid: patent expiry plus label durability decides substitution speed
  • Late: residual value depends on brand attachment and tender/coverage dynamics

What patents protect DUCHESNAY products: formulations, methods, and use claims?

Without specifying individual DUCHESNAY products by name, the competitive landscape can only be described at an archetype level. In specialty/local products, patent portfolios usually cover three buckets:

  1. Composition/formulation

    • active ingredient identity and specific physicochemical form
    • excipient system and concentration ranges
    • stability, impurity profile, and release-related attributes
  2. Manufacturing methods

    • process parameters tied to specific quality attributes
    • controls to manage impurities or degradation products
  3. Therapeutic use and dosing regimen

    • indication-specific claims
    • dosage and schedule-linked claims that align with approved labeling

Strategy for IP assessment in this portfolio class

  • map claims to regulatory-approved strengths and routes
  • test each claim bucket for design-around feasibility
  • assess whether competitors can compete without targeting the exact composition (for example, different delivery system or alternative active/salt)

How does DUCHESNAY compare with multinational pharma in pricing power and access?

DUCHESNAY’s advantage is usually not pricing power at scale. Instead it is access through:

  • pharmacy trust and clinician routines,
  • local sales intensity in priority regions,
  • and product-level differentiation that justifies continued reimbursement.

Competitive comparison dimensions

  • Brand strength vs. multinational breadth
    Multinationals use broader portfolios and cross-indication prescribing habits.

  • Tender and reimbursement dynamics
    EU reimbursement frameworks can rapidly compress margins when generics or therapeutic equivalents appear.

  • Supply chain resilience
    Smaller specialists can be vulnerable to manufacturing bottlenecks, but strong planning can reduce substitution triggers.


What patent litigation affects DUCHESNAY, and what are settlement patterns in similar EU niches?

For DUCHESNAY as a company-level competitive analysis, litigation is typically product-specific and claim-specific, with settlements commonly reflecting:

  • “watch and wait” during appeal windows,
  • market allocation periods aligned with exclusivity,
  • and partial design-around agreements that avoid direct injunction risks.

Settlement pattern likely in these segments

  • settlement terms often protect product-specific IP while allowing entry of competitors with different formulations or presentation
  • court outcomes usually turn on narrow claim interpretation tied to composition or method features

What is the Orange Book status of DUCHESNAY products, and how does FDA exclusivity translate to EU competition?

DUCHESNAY is primarily Europe-focused. Orange Book analysis is most relevant for US-labeled products and is typically used to benchmark:

  • listed patents and expiry cadence,
  • and timing windows for Paragraph IV challenges.

EU-to-US translation of competitive dynamics

  • EU generic launch can occur before US entry if EU exclusivity/patent schedules allow.
  • conversely, US Orange Book-listed patents may delay entry in the US even when EU is open.

What formulation patents are most likely to block competitors for DUCHESNAY?

In locally administered products, the hardest-to-design-around patents usually cover:

  • the full excipient system and concentrations
  • stability and impurity control under real-world storage conditions
  • manufacturing methods that achieve specific quality attributes

Most common competitor workaround paths

  • substitute excipients while preserving the release profile
  • change the administration device/presentation while keeping the active
  • use different salts/polymorphs with comparable pharmacokinetic behavior under local conditions

How do delivery-system changes affect DUCHESNAY’s competitive threat?

Delivery system is a key competitive axis. Rivals can shift competition by:

  • redesigning administration for improved usability or adherence,
  • altering release behavior to match or exceed tolerability outcomes,
  • or using alternative packaging formats that improve pharmacist acceptance.

Implication for IP strategy

If DUCHESNAY’s protection relies on a narrow composition claim, a rival can compete using:

  • same indication,
  • same active,
  • different formulation system and presentation.

If the product’s performance depends on formulation plus process controls, rivals need deeper development, slowing entry.


What generic entry scenarios exist for DUCHESNAY: Paragraph IV vs EU generic registration?

Two entry routes shape competitive risk:

  1. US route (where applicable): Paragraph IV challenges

    • timing depends on Orange Book patent listing
    • litigation can delay approval or launch based on automatic stays and court outcomes
  2. EU route: generic and hybrid development

    • timing depends on national reimbursement and reference product availability
    • patent enforcement is local; launch can be staged to reduce injunction risk

Common entry playbook for rivals in niche EU pharma

  • target the same approved indication
  • choose a design-around formulation
  • compete on price after patent expiry or after a settlement grants “early” carve-outs

Which companies are most likely to challenge DUCHESNAY’s positioning in key EU markets?

Competitive challengers in this niche category class generally include:

  • EU generic heavyweights with strong tender capacity,
  • OTC/pharmacy distribution brands that can shift market share quickly,
  • and device-oriented or combination entrants.

How to assess challenger credibility

  • presence in pharmacy channel and reimbursement negotiations
  • prior experience with design-around formulations
  • ability to scale manufacturing without quality drift
  • regulatory dossier track record for local delivery products

What strategic options does DUCHESNAY have to defend and expand market share?

Defensive strategy in this IP posture typically centers on lifecycle hardening and channel lock-in.

Defensive options with high ROI probability

  • Line extensions that preserve core mechanism but improve stability/adherence
  • Formulation second-generation upgrades that introduce new claimable features
  • Manufacturing process improvements that create additional claim layers tied to quality attributes
  • Evidence upgrades via additional clinical support aligned to labeling claims

Offensive growth options

  • targeted entry into adjacent indications where the formulation and delivery system are positionable
  • licensing to regional partners that can win tenders and maintain pharmacy momentum
  • product-combination strategies where clinical endpoints can be reframed toward tolerability or adherence

Key Takeaways

  • DUCHESNAY’s competitive position is defined by specialty, locally administered product categories where differentiation is primarily product-specific and channel-driven.
  • Patent defensibility is typically formulation and manufacturing-method heavy, making design-around risk material once composition claims expire.
  • Competitive threats concentrate in EU generic and therapeutic-equivalent entrants plus delivery-system substitutes that preserve clinical positioning while bypassing narrow IP.
  • The most actionable strategic lever is lifecycle IP and quality-attribute-linked formulation/process upgrades that create additional claim layers rather than relying on a single dominant patent.

FAQs

Which DUCHESNAY products face the highest generic substitution risk?

Products with protection concentrated in single composition/formulation families and with endpoints that can be matched using alternative excipients or presentation formats face the highest substitution risk.

Do DUCHESNAY competitors typically use Paragraph IV or EU generic registration to enter?

Where US products exist with Orange Book-listed patents, rivals use Paragraph IV. In EU-focused lines, rivals typically enter via EU generic/hybrid registration paired with local patent enforcement strategy.

How do lifecycle extensions usually affect DUCHESNAY’s market exclusivity?

Line extensions such as new strengths, packaging, or improved stability often extend the commercial window by delaying direct “same SKU” substitution and by adding new claimable features.

What delivery-system changes are most dangerous to DUCHESNAY’s defensibility?

Changes that preserve indication and active while altering formulation architecture or administration presentation are most dangerous when the original IP is narrowly tied to excipient system or process parameters.

What is the fastest route for a challenger to win market share against a specialty European manufacturer like DUCHESNAY?

Price-and-availability execution after exclusivity gaps, combined with a dossier strategy that supports equivalence in tolerability or usability without requiring an exact composition match.


References (APA)

  1. FDA. (n.d.). Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations. U.S. Food and Drug Administration.
  2. European Medicines Agency. (n.d.). Generic and hybrid medicines. European Medicines Agency.

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