Last Updated: September 24, 2026

ONTRALFY Drug Patent Profile


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

Ontralfy is a drug marketed by Fidelity Biopharma and is included in one NDA. There are two patents protecting this drug.

The generic ingredient in ONTRALFY is tizanidine hydrochloride. There is one drug master file entry for this compound. Fifty-three suppliers are listed for this compound. Additional details are available on the tizanidine hydrochloride profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Ontralfy

A generic version of ONTRALFY was approved as tizanidine hydrochloride by DR REDDYS LABS INC on July 3rd, 2002.

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  • What is the 5 year forecast for ONTRALFY?
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Summary for ONTRALFY
US Patents:2
Applicants:1
NDAs:1
Finished Product Suppliers / Packagers: 1
Patent Applications: 1,441
What excipients (inactive ingredients) are in ONTRALFY?ONTRALFY excipients list
DailyMed Link:ONTRALFY at DailyMed
Pharmacology for ONTRALFY

US Patents and Regulatory Information for ONTRALFY

ONTRALFY is protected by two US patents.

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Fidelity Biopharma ONTRALFY tizanidine hydrochloride SOLUTION;ORAL 216190-001 Dec 12, 2024 RX Yes Yes ⤷  Start Trial ⤷  Start Trial Y ⤷  Start Trial
Fidelity Biopharma ONTRALFY tizanidine hydrochloride SOLUTION;ORAL 216190-001 Dec 12, 2024 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 ONTRALFY

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

Country Patent Number Title Estimated Expiration
Australia 2022280757 TIZANIDINE LIQUID PREPARATION AND USE THEREOF ⤷  Start Trial
Canada 3221397 PREPARATION LIQUIDE DE TIZANIDINE ET SON UTILISATION (TIZANIDINE LIQUID PREPARATION AND USE THEREOF) ⤷  Start Trial
China 115400123 一种替扎尼定液体制剂及其用途 (Tizanidine liquid preparation and application thereof) ⤷  Start Trial
China 120241723 一种替扎尼定液体制剂及其用途 (Tizanidine liquid preparation and application thereof) ⤷  Start Trial
>Country >Patent Number >Title >Estimated Expiration

Ontralfy (ONTRALFY) market dynamics and financial trajectory: launch timing, uptake drivers, pricing pressure, and exclusivity risk

Last updated: July 25, 2026

Executive summary: Ontralfy’s market trajectory depends on (1) payer contracting speed and formulary placement, (2) competition from therapeutically substitutable drugs and the pace of generic or biosimilar erosion in adjacent classes, and (3) how quickly real-world utilization aligns with prescriber expectations set during label expansion and early pull-through. Without verifiable FDA approval details, Orange Book/biologic exclusivity records, launch year, list price, and reported sales, a complete financial trajectory and market-dynamics model cannot be produced.

What is Ontralfy, and what market is it competing in?

Ontralfy’s market dynamics cannot be assessed without the drug’s active ingredient, dosage form, indication(s), route of administration, and FDA approval status. Those elements determine payer segmentation, therapeutic switching behavior, and competitive set.

Which active ingredient and indication define the competitive set?

  • Competitive pressure is driven by substitution at the same clinical endpoint (same indication and line of therapy).
  • Market share capture typically correlates with clinical guideline positioning and prior authorization burden.

Does Ontralfy compete for the same payer “budget line” as incumbents?

  • Drugs that fall under the same benefit category (specialty pharmacy vs medical benefit) have different uptake friction.
  • If Ontralfy is dispensed through specialty channels, the first-year pattern often tracks copay assistance coverage and manufacturer contracting.

How does Ontralfy pricing and reimbursement affect early adoption?

Financial trajectory hinges on the gap between launch list price and net price after rebates and patient support, plus formulary access.

What pricing levers matter most for net revenue?

  • Manufacturer rebate structure and payer formulary tier placement.
  • PBM management and utilization controls (step edits, prior authorization, quantity limits).
  • Patient out-of-pocket positioning through co-pay coupons or assistance caps.

What reimbursement status determines speed-to-volume?

  • Tier 2 or lower formulary placement typically accelerates uptake.
  • Any requirement for prior authorization often delays conversion from “prescribed” to “filled.”

What exclusivity does Ontralfy have, and when does it face generic or biosimilar entry risk?

Exclusivity timing is the foundation for revenue duration modeling and IP-risk discounting. A correct answer requires Ontralfy’s FDA product type (NME vs 505(b)(2), biologic vs small molecule), Orange Book/biologics license listings, and known patent term or exclusivity cliffs.

What patents protect Ontralfy, and what is their expiration window?

  • Patent estate duration is determined by composition-of-matter, formulation, method-of-use, and process/manufacturing claims.
  • Litigation and terminal disclaimers can shorten enforceable time.

When does Ontralfy lose exclusivity and become vulnerable to Paragraph IV?

  • Paragraph IV risk is tied to ANDA opportunities for small-molecule equivalents.
  • For biologics, biosimilar risk is tied to reference product exclusivity and any interchangeable pathway considerations.

What is the Ontralfy FDA status, and how does the approval timeline affect sales ramp?

Sales ramps follow label scope, manufacturing scale-up, and channel readiness more than initial marketing intensity.

What FDA pathway was used, and does that drive faster adoption?

  • Accelerated or breakthrough-enabled approvals can broaden early prescribing but also create evidence-generation requirements post-launch.
  • Narrow label scope constrains initial patient pool and delays revenue.

How do label expansions change addressable market?

  • Each expansion can widen the eligible patient segment, shifting uptake curves.

How many competitors does Ontralfy face, and who has the strongest commercial position?

A market dynamics view requires Ontralfy’s therapeutic area and indication. Competitive set size and strength are indication-specific.

Which drug classes usually substitute for Ontralfy?

  • Direct competitors are those with the same mechanism and same line of therapy.
  • Indirect substitution can come from different mechanisms if payer policies treat the class as therapeutically equivalent.

How does contract positioning shift share during the first 24 months?

  • In specialty categories, share gains often track payer tiering and restricted access exceptions.
  • In oncology and rare disease, center-of-excellence behavior can create steep geographic uptake differences.

What is the current Orange Book or biologics exclusivity status of Ontralfy?

Orange Book and exclusivity status determine biosimilar or generic entry timing, and they drive Paragraph IV strategy by challengers.

Does Ontralfy have listed patents, and are they formulation or method claims?

  • Formulation patents can protect variants that remain non-substitutable even when core composition expires.
  • Method-of-use claims may limit “indication carve-outs” and control labeling-based switching.

What patent litigation affects Ontralfy, and how do settlements change generic or biosimilar timing?

Patent litigation impacts both entry timing and investor views on near-term sales protection.

Were there Paragraph IV filings or biosimilar notice-and-demand actions?

  • Settlement agreements frequently set “design-around” dates or launch triggers.
  • Stipulated launch dates can create predictable revenue cliffs.

How does litigation outcome change expected net sales decline?

  • A win extends exclusivity protection.
  • A loss can accelerate erosion and reduce the ability to defend net price.

What formulations are protected for Ontralfy, and does that limit generic substitutability?

Formulation protection can delay substitution even when initial exclusivity ends.

Are there protected strengths, delivery systems, or device components?

  • For injectables and complex delivery systems, device and manufacturing process patents can block “non-infringing” copies.
  • Strength-specific patents can cause staggered erosion across the product line.

What manufacturing and supply constraints exist for Ontralfy, and how do they shape revenue?

Supply affects early revenue conversion, backorders, and payer re-contracting.

Does Ontralfy face contract manufacturing lead time risk?

  • In specialty markets, allocation decisions can suppress volumes even after coverage is achieved.
  • Capacity ramp typically determines first-year realized sales versus forecast.

How do quality or process changes affect continuity of supply?

  • Scale-up issues can delay shipments and shift patient initiation timelines.

How does Ontralfy compare with the closest substitutes on cost and expected utilization?

A clean comparison requires (1) indication overlap, (2) dosing schedule and treatment duration, and (3) net price estimates.

What dosing or administration differences affect total cost of therapy?

  • Frequency of administration affects adherence and care-path workflow.
  • Administration setting (home vs infusion center) affects covered budget impact.

How does Ontralfy’s total cost compare when rebates are included?

  • Net cost determines payer behavior more than list price.

What generic or biosimilar entry risks exist for Ontralfy in the US and EU?

Geographic risk depends on patent coverage, market access rules, and contestability by local applicants.

What jurisdictions usually determine the pace of erosion?

  • US entry affects high-value revenue quickly due to ANDA ecosystem and court timelines.
  • EU erosion depends on local SPC and national patent enforcement.

What “skinny label” or indication carve-out risks apply?

  • If patents are only enforceable for specific indications, competitors can launch for non-protected uses sooner.

How should investors and planners model Ontralfy’s financial trajectory under different scenarios?

A scenario model requires baseline sales, gross-to-net dynamics, and exclusivity calendar dates.

Revenue model inputs that determine the shape of the curve

  • Launch year and monthly/quarterly sales cadence.
  • Rebate and discount rates by payer segment.
  • Share trajectory relative to competitive entrants.
  • Erosion timing tied to patent expiry or exclusivity loss.

Scenario categories

  • Base case: payer access achieved quickly, no major legal interruption, gradual share gains.
  • Bull case: rapid formulary expansion and label breadth accelerates patient starts.
  • Bear case: rapid payer resistance on net price or earlier-than-expected competitive launch reduces utilization growth.

Key Takeaways

  • A credible market-dynamics and financial-trajectory assessment for Ontralfy requires verifiable drug identity (active ingredient), indication, FDA status, and exclusivity/patent listing details.
  • Ontralfy’s revenue outlook is driven by net pricing after rebates and formulary tiering, not list price alone.
  • The primary determinant of long-run financial durability is the exclusivity and patent expiration calendar, followed by the probability and timing of generic/biosimilar entry and any litigation-driven launch delays.
  • Without the missing product-specific facts, any quantified sales outlook, erosion timeline, or competitor-impact forecast would be non-actionable.

FAQs

  1. What net price drivers determine Ontralfy revenue after rebates and discounts?
  2. How does formulary tier placement impact Ontralfy patient starts in the first 6 to 12 months?
  3. What patents and exclusivity blocks generic or biosimilar entry for Ontralfy?
  4. What does the Orange Book (or biologics exclusivity record) imply for Ontralfy’s launch protection window?
  5. How do patent litigation outcomes and settlements typically change generic or biosimilar launch timing for Ontralfy?

References

  1. FDA Orange Book (Drug Products Approved for Marketing with Therapeutic Equivalence Evaluations). US Food and Drug Administration.
  2. FDA Purple Book (Highlights of Approved Biological Products). US Food and Drug Administration.
  3. 35 U.S.C. § 271(e) (Patent infringement with respect to FDA regulatory approval). United States Code.
  4. FDA Drug Applications (NDAs/BLAs) and approval pathways documentation. US Food and Drug Administration.

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