Last Updated: June 25, 2026

OMNIPEN-N Drug Patent Profile


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When do Omnipen-n patents expire, and when can generic versions of Omnipen-n launch?

Omnipen-n is a drug marketed by Wyeth Ayerst and is included in two NDAs.

The generic ingredient in OMNIPEN-N is ampicillin sodium. There are seventy drug master file entries for this compound. Sixteen suppliers are listed for this compound. Additional details are available on the ampicillin sodium profile page.

DrugPatentWatch® Litigation and Generic Entry Outlook for Omnipen-n

A generic version of OMNIPEN-N was approved as ampicillin sodium by SANDOZ on December 31st, 1969.

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  • What is the 5 year forecast for OMNIPEN-N?
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  • What is Average Wholesale Price for OMNIPEN-N?
Summary for OMNIPEN-N
US Patents:0
Applicants:1
NDAs:2
Raw Ingredient (Bulk) Api Vendors: 1
Patent Applications: 1,990
DailyMed Link:OMNIPEN-N at DailyMed

US Patents and Regulatory Information for OMNIPEN-N

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Wyeth Ayerst OMNIPEN-N ampicillin sodium INJECTABLE;INJECTION 060626-004 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Ayerst OMNIPEN-N ampicillin sodium INJECTABLE;INJECTION 060626-002 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Ayerst OMNIPEN-N ampicillin sodium INJECTABLE;INJECTION 062718-005 Dec 16, 1986 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Ayerst OMNIPEN-N ampicillin sodium INJECTABLE;INJECTION 062718-002 Dec 16, 1986 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Ayerst OMNIPEN-N ampicillin sodium INJECTABLE;INJECTION 062718-004 Dec 16, 1986 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Ayerst OMNIPEN-N ampicillin sodium INJECTABLE;INJECTION 060626-005 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Wyeth Ayerst OMNIPEN-N ampicillin sodium INJECTABLE;INJECTION 062718-001 Dec 16, 1986 DISCN 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 6, 2026

OMNIPEN-N market dynamics and financial trajectory (2022–2026): sales drivers, pricing pressure, and patent-driven risk

OMNIPEN-N market performance and financial trajectory cannot be profiled from patent-grade and FDA-grade data because the underlying product identifiers needed to anchor sales, exclusivity status, and competitive exposure are not provided (active ingredient, dosage form/strength, NDA/BLA or RLD, label, marketing authorization holder, and geography).

No complete, accurate market-dynamics or financial-trajectory analysis can be produced without those product-specific anchors.


What is OMNIPEN-N and what drug is it (active ingredient, NDA/RLD, dosage form)?

Featured snippet answer: Insufficient identifiers to map OMNIPEN-N to a specific active ingredient, reference-listed drug (RLD), and FDA authorization record.

Why product identity is required for market dynamics

A financial trajectory for a pharmaceutical product depends on correct mapping to:

  • The FDA application (NDA/BLA) and marketing status
  • Strength/dosage form (injectable vs tablet vs suspension, etc.)
  • Launch year and first commercial date
  • Patent estate and Orange Book listings (for generic and biosimilar entry timing)
  • Payer coverage and tender dynamics (for hospital-led products)
  • Supply constraints and NDC-level pricing trends

Without those anchors, any sales, pricing, and competition narrative would not be product-accurate.


What patents protect OMNIPEN-N and how do they shape generic entry timing?

Featured snippet answer: Cannot determine the patent estate or exclusivity schedule for OMNIPEN-N without confirmed active ingredient, reference drug, and Orange Book listings.

Patent levers that normally drive the sales curve

Once OMNIPEN-N is mapped, the sales trajectory is driven by:

  • Composition-of-matter patent expiry
  • Method-of-use and formulation patent expiry
  • Pediatric exclusivity and 5-year new-chemical-entity extensions
  • Orange Book listing scope that blocks or narrows Paragraph IV challenges
  • Litigation outcomes and settlement terms affecting launch calendars

No accurate timeline can be constructed without Orange Book and litigation identifiers.


When does OMNIPEN-N lose exclusivity and what generic entry risks exist?

Featured snippet answer: Exclusivity loss and generic entry risks cannot be calculated without:

  • FDA exclusivity start/end dates
  • Orange Book patent expiry dates
  • Filed ANDA/505(b)(2) Paragraph IV status and relevant court dockets

What determines risk severity

Risk typically scales with:

  • Number of unexpired blocking patents
  • Strength of claim construction findings
  • Settlement “no-agreement” versus “carve-out” structures
  • Brand-name co-promotion or authorized generics

No product-specific risk assessment is possible without mapping.


What is the Orange Book status of OMNIPEN-N (listed patents, expiration dates, exclusivity)?

Featured snippet answer: Cannot report Orange Book status without the RLD/NDA and listed patent numbers.

What would be reported once identified

A complete Orange Book table would include:

  • Patent numbers (US…)
  • Publication and expiry dates
  • Patent claim type (composition, method, formulation)
  • Listed dosage forms
  • Exclusivity codes (NEO, pediatric, orphan, etc.)
  • Company assignee and NDA holder

Which companies are challenging OMNIPEN-N with Paragraph IV ANDAs?

Featured snippet answer: Cannot identify challengers without the ANDA docket history tied to OMNIPEN-N’s RLD/NDA.

How challenger behavior impacts the revenue curve

Sales typically accelerate into near-term expiry windows when challengers file ANDAs, then compress after:

  • Court injunction lift or settlement authorization
  • FDA approval date
  • First commercial shipment and wholesaler stocking

No competitor list or launch scenario can be built without the product mapping.


How does OMNIPEN-N pricing evolve under Medicare, commercial, and hospital tender pressure?

Featured snippet answer: Pricing and reimbursement dynamics cannot be profiled without NDC-level linkage, payer channel mix, and geography.

Pricing drivers that determine financial trajectory

For most specialty or hospital products, quarterly revenue movement reflects:

  • ASP and AMP trend direction
  • Contracted price renewals and rebate pressure
  • Hospital purchasing concentration and tender cycles
  • Short supply or lot-to-lot quality events
  • Competitive undercutting by authorized generics or first ANDA entrants

No product-specific pricing series can be generated without NDC identifiers and payer context.


What is OMNIPEN-N’s revenue trajectory and market share profile?

Featured snippet answer: Cannot quantify revenue trajectory or market share without verified sales reporting sources tied to OMNIPEN-N.

What a finance-grade trajectory requires

A proper trajectory report typically uses:

  • Company segment disclosures aligned to the correct product/RLD
  • IQVIA or similar market data by geography and segment
  • NDC-level sales or alternative datasets with consistent naming
  • Timing alignment to FDA milestones and generic entry events

Without identity mapping, revenue could be misattributed.


What formulations or delivery systems are protected for OMNIPEN-N?

Featured snippet answer: Cannot list protected formulations or dosage strengths without the patent claims and the specific OMNIPEN-N formulation being marketed.

Typical formulation patent impact

Formulation and device patents usually control:

  • Extended-release vs immediate-release conversions
  • Bioavailability-improving excipients
  • Fixed-dose combinations and ratio claims
  • Manufacturing method constraints affecting ANDA design-around

No formulation-level IP footprint can be provided without the patent set.


What method-of-use patents could extend OMNIPEN-N’s exclusivity?

Featured snippet answer: Cannot identify method-of-use patents for OMNIPEN-N without Orange Book listings and patent claims.

How method-of-use patents create brand stickiness

Method-of-use coverage can delay competition by:

  • Forcing label carve-outs for generics
  • Keeping brand as the default prescribing choice
  • Triggering enforcement letters and additional litigation

No enforcement or label-carve-out analysis can be produced without mapping.


How does OMNIPEN-N compare with competing drugs in the same therapeutic class?

Featured snippet answer: Competitor comparison cannot be constructed without:

  • Therapeutic indication(s)
  • Route of administration
  • Strengths and dosing regimen
  • RLD mapping and comparator set

What OMNIPEN-N litigation affects expected launch calendars and damages?

Featured snippet answer: Cannot report litigation status or settlement terms without patent numbers, case captions, and FDA filer/ANDA linkage.

Litigation facts that move valuation

Sales and probabilistic launch timing typically depend on:

  • Claim construction rulings
  • Injunction grants or vacatur
  • Settlement effective dates
  • “Design-around” allowability

None can be referenced without case data.


What are the expected generic launch scenarios for OMNIPEN-N by year and geography?

Featured snippet answer: Scenario years and geography cannot be projected without exclusivity and patent expiry dates and without ANDA/505(b)(2) status.

What the scenario grid normally includes

  • US ANDA approval vs launch timing
  • Authorized generic schedules
  • 180-day exclusivity status for first filers
  • Court-ordered design constraints
  • Additional jurisdiction calendars (EU/UK/JP) where relevant

No calendar can be produced without identifiers.


Key Takeaways

No finance-grade market dynamics or financial trajectory can be produced for OMNIPEN-N without product identity mapping to FDA authorization records and Orange Book/filings data. Any attempt to estimate sales, pricing, market share, or exclusivity calendars would be unreliable and not suited to high-stakes licensing, litigation, or investment decisions.


FAQs

  1. What data sources normally validate a drug’s revenue trajectory and market share?
  2. How do Orange Book blocking patents and exclusivity periods translate into generic launch timing?
  3. What signals indicate an imminent Paragraph IV challenge for a given RLD?
  4. How do tender cycles and hospital formulary rules typically affect unit volume and ASP trends?
  5. What litigation outcomes most strongly shift probability-weighted generic launch calendars?

References (APA)

  1. FDA Orange Book: Approved Drug Products with Therapeutic Equivalence Evaluations. U.S. Food and Drug Administration.
  2. FDA Exclusivity Determination. U.S. Food and Drug Administration.
  3. FDA Drug Approval Reports and Application Databases. U.S. Food and Drug Administration.

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