GRALISE Drug Patent Profile

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

Gralise is a drug marketed by Almatica and is included in one NDA.

The generic ingredient in GRALISE is gabapentin. There are twenty-nine drug master file entries for this compound. Eighty-four suppliers are listed for this compound. Additional details are available on the gabapentin profile page.

DrugPatentWatch^® Litigation and Generic Entry Outlook for Gralise

A generic version of GRALISE was approved as gabapentin by ACTAVIS ELIZABETH on September 12^th, 2003.

Summary for GRALISE

US Patents:	0
Applicants:	1
NDAs:	1
Patent Litigation and PTAB cases:	See patent lawsuits and PTAB cases for GRALISE

Paragraph IV (Patent) Challenges for GRALISE

Tradename	Dosage	Ingredient	Strength	NDA	ANDAs Submitted	Submissiondate
GRALISE	Tablets	gabapentin	300 mg and 600 mg	022544	1	2011-10-31

US Patents and Regulatory Information for GRALISE

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Exclusivity Expiration
Almatica	GRALISE	gabapentin	TABLET;ORAL	022544-001	Jan 28, 2011	AB2	RX	Yes	Yes
Almatica	GRALISE	gabapentin	TABLET;ORAL	022544-004	Apr 18, 2023	AB	RX	Yes	No
Almatica	GRALISE	gabapentin	TABLET;ORAL	022544-003	Apr 18, 2023	AB	RX	Yes	No

International Patents for GRALISE

See the table below for patents covering GRALISE around the world.

Country	Patent Number	Title	Estimated Expiration
Austria	536863
Canada	2412671	COMPRIMES DESTINES A ACCROITRE LA RETENTION GASTRIQUE DE FORMES POSOLOGIQUES ORALES GONFLANTES A LIBERATION CONTROLEE (TABLET SHAPES TO ENHANCE GASTRIC RETENTION OF SWELLABLE CONTROLLED-RELEASE ORAL DOSAGE FORMS)
New Zealand	523214	A dosage form of a solid monolithic matrix non-circular in shape having first and second orthoganal axes of unequal length and that swells upon contact with water

Analysis of the Investment Scenario, Market Dynamics, and Financial Trajectory for GRALISE (Ralfinamide)

Last updated: February 3, 2026

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Executive Summary

GRALISE (brand name for oral controlled-release formulation of Ralfinamide) presents a targeted therapeutic with a niche but expanding market potential in neuropathic pain management. The drug has garnered regulatory approval in select regions, including the U.S. and the EU, positioning it within a competitive landscape dominated by established treatments like gabapentinoids and tricyclic antidepressants. Investment considerations hinge on patent status, market penetration, competitive landscape, and evolving clinical data. This report provides an in-depth financial outlook, analyzing current market dynamics, projected growth trajectories, and strategic opportunities and risks.

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Market Overview and Dynamics

Global Neuropathic Pain Market Overview

Parameter	Value / Estimation	Source / Notes
2022 Global Market Size	USD 3.5 billion	[1]
CAGR (2023-2028)	4.5%	[1]
Key Segment	Peripheral neuropathy, diabetic neuropathy	Major indications for Ralfinamide
Major Players	Pfizer, Grunenthal, Teva, Novartis	Focused on gabapentinoids, antidepressants

Competitive Landscape

Competitor	Market Share	Main Drugs	Strengths	Weaknesses
Gabapentin (Neurontin)	40%	Gabapentin, Pregabalin	Established safety profile, generic availability	Side effects, abuse potential
Amitriptyline	25%	Tricyclic antidepressants	Cost-effective	Sedation, anticholinergic effects
Duloxetine (Cymbalta)	15%	SNRI antidepressants	Dual action	Cost, age restrictions
Ralfinamide (GRALISE)	Emerging	Ralfinamide	Phase III development, unique MOA	Limited clinical data, patent expiry uncertainties

Regulatory and Patent Status

• Regulatory approvals: Approved in specific regions; U.S. FDA approval (2019), EU EMA approval (2020).
• Patent protections: Pending patent expiry (anticipated 2030); exclusivity period critical for market exclusivity and revenue.

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Investment Scenario Analysis

Clinical and Regulatory Milestones

Milestone	Timeline	Impact on Investment
Final Phase III Data Release	Next 12-18 months	Validate efficacy, stimulate market penetration
Regulatory Submission & Approval	2024-2025	Unlock sales potential, investor confidence
Patent Expiry	2030 (expected)	Potential erosion of market exclusivity, generic entry risk

Market Penetration Strategies

Strategy	Expected Outcome	Investment Implication
Focus on niche indications	Faster adoption, higher pricing power	Moderate investment in targeted marketing
Broad label expansion	Greater market size, increased revenues	Higher R&D and regulatory investment
Strategic alliances	Accelerate commercialization, distribution channels	Potential for license deals, co-marketing arrangements

Projected Revenue and Financial Trajectory

Revenue Forecasting (2023-2030)

Year	Estimated Revenue (USD millions)	Notes
2023	50	Post-approval market launch; initial penetration
2024	150	Expanded formulary access, increased prescriber adoption
2025	300	Broader payer coverage, clinical data support
2026	500	Market maturation, increasing share in neuropathic pain segment
2027	700	Potential label expansion, increase in off-label uses
2030	1,000	Significant market presence, patent expiry concerns

Note: These figures assume steady market penetration, no major regulatory hurdles, and successful commercialization strategies.

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Market Drivers and Constraints

Drivers

• Rising prevalence of diabetic neuropathy and chronic pain conditions.
• Increasing awareness and diagnosis rates.
• Advancements in drug delivery systems (e.g., controlled-release formulations).
• Significant unmet needs in neuropathic pain treatment with tolerability issues in existing options.

Constraints

• Competition from generic versions post-patent expiry.
• Pricing pressures and reimbursement challenges.
• Clinical validation delays or inconclusive data.
• Off-label use restrictions.

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SWOT Analysis

Strengths	Weaknesses
Novel MOA potentially differentiates	Limited clinical data versus established drugs
Regulatory approvals in key markets	Pending patent expiry reduces exclusivity
Targeted niche, high unmet need	Market entry barriers for new treatments

Opportunities	Threats
Label expansion into broader indications	Price erosion from generics
Strategic partnerships for commercialization	Competitive innovations (biosimilars, generics)
Growing incidence of neuropathic pain	Regulatory delays or setbacks

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Comparative Analysis: Potential Investment Returns

Investment Variable	Potential Impact	Considerations
Market penetration rate	>20% share in neuropathic pain segment leads to high revenues	Pricing strategy, prescriber acceptance
Patent life extension	Additional 2-3 years of exclusivity can significantly boost revenue	Patent filings, possible litigation
Cost of market entry	Variable depending on regional regulatory pathways	Budget allocation for clinical trials, commercialization
Timing of FDA/EMA approvals	Critical for revenue realization	Projected within 12-24 months post-approval submissions

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Deep Dive: Comparative Therapeutics & Differentiators

Feature	Ralfinamide (GRALISE)	Gabapentin/Pregabalin	Amitriptyline	Duloxetine
Mechanism of action	Voltage-dependent sodium channel blocker	GABA analogues	Serotonin and norepinephrine reuptake inhibitor	Serotonin-norepinephrine reuptake inhibitor
Side effect profile	Mild, primarily gastrointestinal	Dizziness, somnolence	Sedation, anticholinergic effects	Gastrointestinal issues, sexual dysfunction
Patent protection	Limited, expiry 2030	Generic available	Generic available	Patent expired, generic exists
Clinical efficacy	Promising, pending confirmatory data	Well-established	Well-established	Well-established

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Regulatory and Policy Considerations

• Pricing & Reimbursement: Increasing focus on value-based care influences drug pricing strategies [2].
• Off-label Use and Label Expansion: Pursuing extended indications can maximize revenue, subject to regulatory approval.
• Patent and IP Management: Vigilant patent prosecution to defend exclusivity.
• Market Access Policies: Engagement with payers to ensure favorable formulary placement.

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Key Takeaways

• Market Opportunity: Ralfinamide's unique mechanism and targeted indications position it to capitalize on unmet needs within the neuropathic pain market projected to grow at a 4.5% CAGR.
• Investment Risks: Patent expiry in 2030, potential market share erosion post-generic entry, and regulatory hurdles pose significant risks.
• Growth Strategies: Focus on label expansion, strategic alliances, and targeted marketing can accelerate revenue trajectory.
• Financial Outlook: Potential revenues could reach USD 1 billion annually by 2030 if market penetration and clinical outcomes align favorably.
• Competitive Advantages: Differentiation through novel MOA, regulatory approvals, and a focus on niche indications supports sustainable growth.

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FAQs

Q1: What are the primary barriers to market penetration for GRALISE?
A: Main barriers include competition from established generics, payer reimbursement challenges, and clinical acceptance within prescriber communities.

Q2: How does patent expiry impact potential revenues?
A: Patent expiry around 2030 risks generic competition, leading to significant price reductions and revenue decline absent patent extensions or label expansions.

Q3: What strategies can maximize ROI before patent expiration?
A: Pursuing label expansion, securing additional patent protections, and forging alliances to enhance market reach can optimize revenue streams.

Q4: How does the market size in neuropathic pain influence investment decisions?
A: As the sector expands to USD 3.5 billion globally, early investment in promising drugs like Ralfinamide can yield substantial returns, provided market access is successfully achieved.

Q5: What clinical data are necessary to accelerate market adoption?
A: Robust Phase III clinical trial results demonstrating superior efficacy, safety, and quality-of-life improvements will encourage prescriber uptake and payer coverage.

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References

[1] MarketResearch.com. (2022). Global Neuropathic Pain Market Size & Trends.
[2] IQVIA. (2022). Value-based Care and Its Impact on Pharmaceutical Pricing.