osphena Drug Patent Profile

Which patents cover Osphena, and what generic alternatives are available?

Osphena is a drug marketed by Duchesnay and is included in one NDA. There are two patents protecting this drug and one Paragraph IV challenge.

The generic ingredient in OSPHENA is ospemifene. There is one drug master file entry for this compound. One supplier is listed for this compound. Additional details are available on the ospemifene profile page.

DrugPatentWatch^® Generic Entry Outlook for Osphena

Osphena was eligible for patent challenges on February 26, 2017.

There have been two patent litigation cases involving the patents protecting this drug, indicating strong interest in generic launch. Recent data indicate that 63% of patent challenges are decided in favor of the generic patent challenger and that 54% of successful patent challengers promptly launch generic drugs.

Indicators of Generic Entry

Summary for osphena

US Patents:	2
Applicants:	1
NDAs:	1
Finished Product Suppliers / Packagers:	1
Raw Ingredient (Bulk) Api Vendors:	63
Clinical Trials:	2
Patent Applications:	566
Drug Prices:	Drug price information for osphena
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for osphena
What excipients (inactive ingredients) are in osphena?	osphena excipients list
DailyMed Link:	osphena at DailyMed

See drug prices for osphena

Recent Clinical Trials for osphena

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

Sponsor	Phase
Emory University	Phase 4
Sue Goldstein	Phase 4

See all osphena clinical trials

Pharmacology for osphena

Drug Class	Estrogen Agonist/Antagonist
Mechanism of Action	Selective Estrogen Receptor Modulators

Paragraph IV (Patent) Challenges for OSPHENA

Tradename	Dosage	Ingredient	Strength	NDA	ANDAs Submitted	Submissiondate
OSPHENA	Tablets	ospemifene	60 mg	203505	1	2020-12-29

US Patents and Regulatory Information for osphena

osphena is protected by four US patents.

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013		RX	Yes	Yes
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013		RX	Yes	Yes			Y

Expired US Patents for osphena

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	Patent No.	Patent Expiration
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013
Duchesnay	OSPHENA	ospemifene	TABLET;ORAL	203505-001	Feb 26, 2013

EU/EMA Drug Approvals for osphena

Company	Drugname	Inn	Product Number / Indication	Status	Generic	Biosimilar	Orphan	Marketing Authorisation	Marketing Refusal
Shionogi B.V.	Senshio	ospemifene	EMEA/H/C/002780Senshio is indicated for the treatment of moderate to severe symptomatic vulvar and vaginal atrophy (VVA) in post-menopausal women.	Authorised	no	no	no	2015-01-14

International Patents for osphena

When does loss-of-exclusivity occur for osphena?

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

Lithuania

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 osphena around the world.

Country	Patent Number	Title	Estimated Expiration
Austria	300289
Australia	2001258449
Australia	5844901
Bulgaria	107472

Supplementary Protection Certificates for osphena

Patent Number	Supplementary Protection Certificate	SPC Country	SPC Expiration	SPC Description
1713458	CA 2015 00031	Denmark		PRODUCT NAME: OSPEMIFENE; REG. NO/DATE: EU/1/14/978/001-002 20150115
1713458	C300742	Netherlands		PRODUCT NAME: OSPEMIFEEN, DESGEWENST IN DE VORM VAN EEN FARMACEUTISCH; REGISTRATION NO/DATE: EU/1/14/978 20150115
1713458	92736	Luxembourg		PRODUCT NAME: OSPEMIFENE DANS TOUTES LES FORMES PROTEGEES PAR LE BREVET DE BASE; FIRST REGISTRATION: 20150115
1713458	PA2015023	Lithuania		PRODUCT NAME: OSPEMIFENUM; REGISTRATION NO/DATE: EU/1/14/978/001, 2015 01 15 EU/1/14/978/002 20150115

OSPHENA (ospemifene) market dynamics and financial trajectory: exclusivity, competition, pricing, and revenue risk

Last updated: May 21, 2026

OSP HENA (ospemifene) is an oral small-molecule for moderate-to-severe dyspareunia due to vulvar and vaginal atrophy (VVA) in postmenopausal women. The product’s near-term financial trajectory is shaped by (1) aging-label and prescriber inertia, (2) competition from topical and device options, (3) payer formulary pressure on oral niche women’s health drugs, and (4) the maturity of IP exclusivity and generic entry risk windows.

What is OSPHENA (ospemifene) used for and how does its market get segmented?

Featured snippet answer: OSPHENA is prescribed for moderate-to-severe dyspareunia (pain with intercourse) associated with VVA in postmenopausal women.

Indication and positioning

• Indication: Moderate-to-severe dyspareunia due to VVA.
• Therapeutic category: Women’s health, urogenital atrophy, estrogen receptor modulator-class drug (SERM).
• Route/dosing: Oral.
• Clinical positioning: Systemic agent compared with topical estrogen and non-hormonal lubricants/moisturizers; prescribers often weigh convenience and patient preference against topical localized therapies.

Customer segmentation

• Specialty prescribers: Gynecology (primary), urology (overlap on genitourinary syndrome of menopause), menopause clinics.
• Healthcare system drivers:
  • Formularies for “non-preferred” women’s health oral agents often tighten over time.
  • Step edits against branded oral SERMs are common once competitors gain coverage or clinical pathways shift to topical first-line.

How has OSPHENA performed financially and what are the key drivers of revenue trajectory?

Featured snippet answer: The financial trajectory of ospemifene is driven by brand maturity, uptake versus topical competitors, and payer reimbursement dynamics for a niche women’s health indication; absent clear market-expansion levers, revenue typically trends toward slower growth or steady decline as generics and formulary pressure increase.

What typically moves ospemifene revenue

• New starts vs. persistence: OSPHENA’s revenue is sensitive to initial uptake (new prescriptions) and persistence after discontinuation. Women’s health therapies show high switching once symptoms improve or if side effects occur.
• Payer coverage and net price: Net revenue depends on rebates, copay assistance, and formulary tier placement. Over time, branded niche drugs often face:
  • preference loss,
  • higher patient cost share,
  • increased prior authorization scrutiny.
• Safety communications and label sensitivity: SERMs in women’s health face higher scrutiny around estrogenic risk profiles. Even when risk is manageable within label, payer and patient comfort can influence utilization.
• Competition effects: Even without direct pharmacologic peers, topical estrogen adoption, ospemifene substitution practices (switching within menopause dyspareunia regimens), and non-hormonal pathways compress share.

Financial trajectory milestones to track

For a rigorous investment or licensing view, the following milestones determine whether ospemifene is on a stable, declining, or at-risk-of-acceleration decline path:

• Payer contracting cycles (commercial and Medicare Advantage).
• Formulary tier movement for oral dyspareunia therapies.
• Any patent-driven launch or settlement events affecting generic supply timelines.
• Gross-to-net changes driven by rebate structure changes or copay support adjustments.

What patent and exclusivity landscape supports or threatens OSPHENA’s revenue?

Featured snippet answer: OSPHENA is affected by the maturation of brand exclusivity and the practical entry timing for generics once relevant patent and regulatory exclusivity barriers are cleared.

IP-driven risk framework (how ospemifene revenue is protected)

OSPHENA’s revenue resilience depends on:

1. Orange Book-listed patents for drug substance, drug product, and method-of-use.
2. Regulatory exclusivities (5-year and 3-year, plus any pediatric exclusivity extensions if triggered).
3. Patent litigation outcomes tied to ANDA filings or 505(b)(2) approvals.
4. Settlement agreements that delay generic launches while preserving market pricing power for a period.

Revenue exposure by IP segment (typical impact)

• Composition of matter or key process patents: strongest protection and usually the longest runway.
• Method-of-use patents: can limit label carve-outs if a generic attempts to launch without infringing a narrower method.
• Formulation/polymorph/device delivery patents: can force “work-alike” product differences that still allow generic label entry but complicate supply scale-up.

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

Featured snippet answer: OSPHENA’s generic entry risk is tied to the expiration of Orange Book-listed patents and regulatory exclusivity, followed by ANDA approval and 180-day exclusivity dynamics if an earlier filer exists.

Generic launch scenario structure

A complete generic risk assessment should follow this sequence:

• Step 1: Patent expiry or successful challenge outcome.
• Step 2: ANDA approval timing once barriers are cleared.
• Step 3: 180-day exclusivity if applicable to the first ANDA filer.
• Step 4: Launch effectiveness shaped by distribution contracts and rebate strategy.

Key question for financial modeling

• Is there effective exclusivity beyond nominal patent expiry due to:
  • continued litigation,
  • automatic stay triggered by a statutory mechanism,
  • settlement terms that include delayed entry and “carve-out” arrangements?

What is the Orange Book status of OSPHENA and how many patents cover it?

Featured snippet answer: OSPHENA’s Orange Book patent count and listing scope determine both generic launch risk and whether challenges are likely to be early-stage (early patents) or method-of-use dependent.

Patent estate mapping approach

For each listed patent, mapping must include:

• patent number,
• assignee/patentee,
• claim scope category (drug substance, composition, method of use, formulation),
• expiration date,
• any pediatric or patent term adjustments,
• litigation status and any court orders affecting enforcement.

Which companies are challenging OSPHENA and what Paragraph IV activity matters for revenue?

Featured snippet answer: The most revenue-relevant challenges are Paragraph IV ANDAs filed against key Orange Book patents where the challenger seeks immediate market entry upon approval.

What to track

• ANDA filers tied to Paragraph IV and which patent numbers are challenged.
• Court outcomes that define whether the generic can launch at approval or is blocked.
• Settlement agreements that create staggered entry dates by dosage form or labeling.

How does OSPHENA compare with topical estrogen therapies and non-hormonal options in the dyspareunia market?

Featured snippet answer: OSPHENA competes indirectly with topical estrogen and non-hormonal VVA management options; share depends on convenience, coverage, and clinical preference patterns.

Competitive substitution dynamics

• Topical estrogen: often first-line in formularies because it can be positioned as localized therapy with familiar long clinical use; uptake depends on comfort, adherence, and prescriber comfort.
• Non-hormonal options: moisturizers and lubricants can substitute partially, especially for patients avoiding hormone pathways.
• Other systemic options: SERMs and hormone-adjacent therapies can substitute if payer coverage is favorable.

Implications for market growth

If payer coverage shifts to topical first, ospemifene’s growth slows and persistence may become more important than expansion.

What formulations and dosing strengths are relevant for OSPHENA competition and substitution risk?

Featured snippet answer: Formulation coverage affects generic launch feasibility and whether a competitor can enter with equivalent dosing strengths under a streamlined substitution pathway.

Competition relevance

• Generic entry feasibility depends on:
  • whether the generic is pharmaceutically equivalent for the branded strengths,
  • whether formulation patents constrain bioequivalent pathways,
  • whether method-of-use claims create label entry constraints.

What FDA pathway status applies to OSPHENA and what does it mean for follow-on competition?

Featured snippet answer: OSPHENA’s initial FDA approval defines baseline regulatory exclusivity; subsequent 505(b)(2) or ANDA pathways can erode net revenue once patent barriers fall.

Regulatory factors that affect time-to-competition

• Therapeutic equivalence standards for ANDA approval.
• Label carve-outs where method-of-use protection influences the approved indication.
• Manufacturing and quality readiness for rapid launch.

What patent litigation and settlements could change OSPHENA’s launch calendar?

Featured snippet answer: Court decisions and settlement agreements typically dictate the exact launch date for generics more than the nominal expiration year.

Settlement-driven revenue impact

• Settlements can:
  • delay launch beyond patent expiration,
  • permit delayed “at-risk” entry with inventory restrictions,
  • constrain marketing language or label scope.

How strong is the patent estate for OSPHENA from a litigation and enforcement perspective?

Featured snippet answer: Patent strength for a branded dyspareunia drug is assessed by how many independent claim sets cover drug substance, method of use, and formulation, and whether those patents have survived validity challenges.

Metrics used in enforcement strength scoring

• Number of independent patent groups.
• Litigated patents vs. unlitigated “sleeping” patents.
• Claim breadth: whether “design around” is possible.
• Historical litigation posture: whether parties settle early or litigate through final judgments.

What generic entry risks exist for OSPHENA by geography and payer type?

Featured snippet answer: U.S. exclusivity and U.S. Orange Book status are most material for revenue, but payer leverage and sourcing availability determine how fast substitutes take share after approval.

Geography

• United States: primary revenue impact via FDA ANDA approvals and Orange Book triggers.
• EU/UK and other markets: can follow different patent calendars; cross-market revenue matters only if company reporting is consolidated and local market share is meaningful.

Payer type

• Commercial: more aggressive formulary management and rebate renegotiation.
• Medicare/MA: plan formulary updates can accelerate adoption of lower-cost generics.

Which commercial factors most determine whether OSPHENA revenue declines slowly or sharply?

Featured snippet answer: Net price compression speed and persistence after formulary movement are the two most important commercial variables.

Slow-decline profile

• Stable formulary position
• Continued specialty uptake
• Limited generic threat or delayed entry

Sharp-decline profile

• Preferred tier removal
• Loss of copay assistance effectiveness
• Generic entry with rapid channel pull-through
• Patent-driven launches occur simultaneously across strengths

Key Takeaways

• OSPHENA is a niche oral therapy for moderate-to-severe dyspareunia due to VVA; revenue is driven by persistence, payer placement, and prescriber behavior.
• Financial trajectory is dominated by gross-to-net changes and formulary tier dynamics, not just topline demand.
• The largest downside risk is a generic launch sequence once Orange Book-listed barriers and regulatory exclusivity are cleared; litigation outcomes and settlements often set the real calendar.
• Competitive pressure is indirect through topical estrogen and non-hormonal options; ospemifene’s share depends on coverage and patient preference.

FAQs

1. How do Orange Book method-of-use patents affect OSPHENA generic label entry timing?
2. What does 180-day ANDA exclusivity typically mean for OSPHENA price erosion after generic approval?
3. How do Medicare Advantage formulary updates usually impact branded women’s health drugs like OSPHENA?
4. Which claim categories in a SERM patent estate most often enable generics to “design around” protection?
5. What commercial levers (rebates, copay assistance, prior authorization) most influence ospemifene net revenue retention?

References

(No citations provided because no source material was included in the prompt.)