Last Updated: July 28, 2026

LOW-OGESTREL-21 Drug Patent Profile


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Which patents cover Low-ogestrel-21, and what generic alternatives are available?

Low-ogestrel-21 is a drug marketed by Dr Reddys Labs Sa and is included in one NDA.

The generic ingredient in LOW-OGESTREL-21 is ethinyl estradiol; norgestrel. There are twenty-six drug master file entries for this compound. Seven suppliers are listed for this compound. Additional details are available on the ethinyl estradiol; norgestrel profile page.

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Summary for LOW-OGESTREL-21

US Patents and Regulatory Information for LOW-OGESTREL-21

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Dr Reddys Labs Sa LOW-OGESTREL-21 ethinyl estradiol; norgestrel TABLET;ORAL-21 075288-001 Jul 28, 1999 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: July 5, 2026

Low-Ogestrel 21 Market Dynamics and Financial Trajectory (US): revenue drivers, pricing, and exclusivity risk

Low-Ogestrel 21 is a US-market contraceptive product whose commercial trajectory is driven less by patent “innovation cycles” and more by supply continuity, payer contracting, and the pace of generic and label-identified competition in the combined oral contraceptive (COC) segment. Because the product’s active ingredient category is mature, long-running, and typically protected by expiring composition and method-of-use IP, financial outcomes usually track generic price erosion, wholesaler inventory cycles, and formulary tiering rather than product-specific clinical differentiation.

What is Low-Ogestrel 21 and how does it make money?

Low-Ogestrel 21 is a branded oral contraceptive regimen product sold in the United States. Like other 21-day COC cycles, its revenue model is primarily volume-driven: prescriptions and refills under commercial and government pharmacy benefits.

Revenue mechanics in COCs

  • Core driver: persistent demand for contraception and cycle management from established prescribers and pharmacy repeat dispensing.
  • Secondary drivers: formulary placement (often tiering incentives), PBM rebates, and adherence-linked refill patterns.
  • Erosion driver: competition from therapeutically equivalent generics and any “same actives, same dose” entrants with aggressive pricing.

What changes financial trajectory in COCs?

  • Switching and substitution: pharmacy-level substitution to AB-rated generics compresses net price unless the brand maintains rebate-backed formulary status.
  • Supply chain stability: disruptions create short spikes in market share and price, followed by normalization.
  • Contract expirations: PBM and insurer contracts are frequent inflection points that can move a product up or down formularies quickly.

How big is the Low-Ogestrel 21 market, and who competes for prescriptions?

The contraceptive market for COCs is mature and highly fragmented at the brand level but concentrated at the pharmacy benefit level. In practice, patients and clinicians see a limited set of preferred or covered options shaped by:

  • PBM formularies
  • state substitution rules
  • AB-rating and pharmacy substitution behavior
  • patient history and prescriber preference for specific dosing schedules

Competitive landscape: typical COC battle pattern

  • Most pressure: AB-rated generics priced below branded competitors.
  • Brand defensibility: maintained through payer contracting, channel relationships, and sometimes historical patient preference.
  • Differentiation: often limited to packaging, dosing instructions, and labeling nuances rather than active pharmacology.

When does Low-Ogestrel 21 lose exclusivity and why does that matter financially?

For mature COC products, the exclusivity narrative usually plays out as:

  1. early IP (composition, method-of-use) controls first-wave competition,
  2. later patent expirations enable generic versions,
  3. any remaining label/IP blocks shrink into niche protection, typically not enough to stop AB generic entry.

Financial impact of exclusivity loss

  • Net price compression: immediate post-entry drop is common because payer cost controls and substitution accelerate.
  • Volume-share shift: branded unit volumes fall as prescriptions switch to the lowest-cost covered AB-rated product.
  • Margin compression: increased rebate pressure to defend preferred status, even when unit share stabilizes.

What patents protect Low-Ogestrel 21 and what is the expiration timeline?

No complete and accurate patent-portfolio data is provided in the prompt. Without Orange Book listings, associated assignee/application numbers, and a patent-by-patent expiration matrix, a defensible expiration timeline cannot be produced.

What is the Orange Book status of Low-Ogestrel 21?

No Orange Book status data is provided in the prompt. Without exact NDA/ANDA identifiers and Orange Book publication details, a correct listing status summary cannot be generated.

What generic entry risks exist for Low-Ogestrel 21?

For mature COCs, generic entry risk is usually structural: once a reference product’s relevant IP barriers clear, generic entrants can compete via established ANDA pathways. The practical risk translates into:

  • rapid AB substitution at the pharmacy counter,
  • payer formulary switches toward lowest-cost covered options,
  • margin pressure on any remaining branded inventory and channel contracts.

No ANDA filing history, listed patents, or litigation records are provided in the prompt, so no specific generic entry risk assessment can be stated for Low-Ogestrel 21.

Has Low-Ogestrel 21 faced Paragraph IV challenges or patent litigation?

No litigation dataset is provided in the prompt. Without case captions, court dockets, or settlement terms, litigation timing and financial implications cannot be stated accurately.

How does Low-Ogestrel 21 compare with other low-dose COCs on price and adoption?

In low-dose COC segments, observed market behavior typically follows:

  • lowest WAC or contracted net price wins preferred formulary status,
  • brand volume tends to decline as multiple AB generics exist,
  • rebate strategies determine whether a brand retains “preferred” placement.

A quantified comparison requires:

  • sales and net-price history for Low-Ogestrel 21,
  • competitor lists by NDC and AB equivalence classes,
  • PBM formulary tiers and rebate disclosures.

Those inputs are not included in the prompt, so only a generic market dynamic statement can be made, not a product-specific comparison.

What is the FDA regulatory status of Low-Ogestrel 21, including approval pathway and labeling risks?

No NDA/ANDA pathway details, FDA approval date, or labeling history are provided in the prompt. A product-specific regulatory status statement cannot be completed accurately.

What manufacturing and supply-chain factors affect Low-Ogestrel 21 revenue?

COCs are sensitive to supply continuity even when IP is stable. Revenue trajectory can shift due to:

  • contract manufacturing throughput and batch release timing,
  • raw material availability for active pharmaceutical ingredients,
  • FDA quality actions, if any, that affect distribution schedules.

No manufacturing interruption or FDA inspection/consent decree history is provided in the prompt, so no specific financial-impact events can be mapped.

How have Low-Ogestrel 21 revenues trended over time, and what financial benchmarks matter?

For COCs, investors and strategists typically track:

  • Unit volume trend (TRx and refills)
  • Net revenue growth vs. unit decline (rebates, price changes)
  • Market share vs. category growth (category growth is often modest)
  • Gross-to-net margin (rebates and discounts)
  • Gross margin stability (generics usually push margins down for brands)

No revenue, unit, TRx, NDC-level dispensing, or gross-to-net data is provided in the prompt, so a quantified financial trajectory cannot be produced.

Key financial drivers by time horizon (what usually moves a COC’s income statement)

Near-term (0–24 months)

  • PBM contract renewal outcomes
  • inventory rebalancing and wholesaler ordering patterns
  • seasonal prescribing patterns
  • generic promotional intensity

Mid-term (2–5 years)

  • post-exclusivity competitive build
  • formulary churn and tiering shifts
  • potential supply stabilization costs if production capacity changes

Long-term (5+ years)

  • structural generic dominance of the AB class
  • brand rationalization or exit decisions in some portfolios
  • continued regulatory lifecycle management (labeling, manufacturing updates)

Key Takeaways

  • Low-Ogestrel 21’s market dynamics are primarily volume and formulary-driven typical of mature combined oral contraceptives.
  • Financial trajectory in this segment is usually shaped by generic AB competition, payer contracting, and supply continuity, not by sustained patent-led differentiation.
  • A product-specific exclusivity, Orange Book, patent expiration, litigation, and revenue timeline cannot be stated from the prompt because no Orange Book, patent, litigation, FDA pathway, or financial performance data is provided.

FAQs

  1. How do PBM tier placements typically affect branded COC net revenue after generic entry?
  2. What NDC-level indicators best predict a branded COC’s unit-share decline in the first 12 months post-entry?
  3. How do AB-substitution rules vary by state for contraceptives and what does that do to pharmacy demand?
  4. What manufacturing disruptions most commonly cause COC distribution delays and pricing swings?
  5. How should analysts map COC gross-to-net margin changes to rebate contract renewals?

References (APA)

No sources were cited because the prompt did not include Orange Book listings, FDA identifiers, patent numbers, litigation records, or financial performance datasets for Low-Ogestrel 21.

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