Last Updated: August 9, 2026

ENOVID-E Drug Patent Profile


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When do Enovid-e patents expire, and what generic alternatives are available?

Enovid-e is a drug marketed by Gd Searle Llc and is included in one NDA.

The generic ingredient in ENOVID-E is mestranol; norethynodrel. There are eleven drug master file entries for this compound. Additional details are available on the mestranol; norethynodrel profile page.

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Questions you can ask:
  • What is the 5 year forecast for ENOVID-E?
  • What are the global sales for ENOVID-E?
  • What is Average Wholesale Price for ENOVID-E?
Summary for ENOVID-E
US Patents:0
Applicants:1
NDAs:1
Raw Ingredient (Bulk) Api Vendors: 6
DailyMed Link:ENOVID-E at DailyMed

US Patents and Regulatory Information for ENOVID-E

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Gd Searle Llc ENOVID-E mestranol; norethynodrel TABLET;ORAL-20 010976-006 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
Gd Searle Llc ENOVID-E 21 mestranol; norethynodrel TABLET;ORAL-21 010976-007 Approved Prior to Jan 1, 1982 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 6, 2026

ENOVID-E market dynamics and financial trajectory: revenue outlook, competitive pressures, and IP-driven launch risks

Executive summary: No public, citable dossier identifiers (active ingredient, NDA/BLA number, manufacturer, FDA status, or Orange Book/Biosimilar references) are available to map ENOVID-E to a specific marketed product. Without that mapping, market and financial trajectory cannot be reliably quantified, including revenue exposure, payer position, competitive entry timing, and patent/IP barrier effects.

Market dynamics and financial trajectory depend on:

  • The active ingredient and strength (for competitive set construction)
  • FDA approval pathway and exclusivity (for generic/biosimilar timing)
  • Orange Book and patent estate scope (for litigation and design-around risk)
  • Launch geography and distribution footprint (for forecasting)
  • Manufacturer and label indications (for reimbursement and channel dynamics)

No such product-specific identifiers are provided, and no citable source details exist in this request to support a complete and accurate market and financial analysis.


What is ENOVID-E and who markets it?

A financial trajectory analysis requires product identity at minimum in one of the following forms:

  • Active ingredient name + dosage form/strength
  • NDA/BLA number
  • Labeler (manufacturer on the FDA label)
  • Orange Book reference product name and applicant

None is provided for ENOVID-E, so the product cannot be reliably linked to FDA, Orange Book, or competitive market data.

What active ingredient does ENOVID-E contain?

Without the active ingredient, it is not possible to determine:

  • Therapeutic class and clinical comparators
  • Likely payer utilization patterns (hospital vs retail, specialty vs primary care)
  • Typical pricing and reimbursement bands
  • Biosimilar/generic feasibility and regulatory entry pathways

What FDA product number and approval pathway applies to ENOVID-E?

Revenue timing, exclusivity windows, and generic entry risk hinge on:

  • NDA/BLA approval date and supplement history
  • Priority review, accelerated approval, or regular approval
  • Exclusive marketing rights and periods tied to Hatch-Waxman or 505(b)(2)

No FDA identifiers are available for ENOVID-E in the request.


What patents protect ENOVID-E and how do they affect market access?

A patent estate impact view requires Orange Book patent listings (drug substance, drug product, formulation, method-of-use, and manufacturing process) tied to the specific reference listed drug.

Which Orange Book patents are listed for ENOVID-E?

Patent strength and generic/biosimilar entry timing require:

  • Patent numbers
  • Expiration dates
  • Patent types (P2/P3/P4, etc.)
  • Listed use codes and dosage forms

No Orange Book data is available for ENOVID-E in the request.

What method-of-use and formulation IP blocks could delay generics?

Even with a known reference product, the delay risk depends on whether:

  • Method-of-use claims map to the approved label indications
  • Formulation claims cover dosage form and release characteristics
  • Process claims constrain manufacturing design-around

No mapped claims exist because ENOVID-E cannot be tied to a specific reference product.


When does ENOVID-E lose exclusivity and what is the generic entry timeline?

A timeline requires at least:

  • Regulatory exclusivity end date (e.g., 5-year, 7-year depending on exclusivity basis)
  • Patent expiration sequence (including pediatric exclusivity)
  • Potential Paragraph IV filing windows

No exclusivity dates or patent expirations can be produced without identifying the underlying FDA reference product for ENOVID-E.

What are the most likely generic launch scenarios for ENOVID-E?

Generic scenarios vary by:

  • Whether patents are method-of-use vs composition-of-matter
  • Whether the reference product has multiple strengths/dosage forms
  • Whether the first generic must address all use codes

No scenario can be generated without the Orange Book record and label scope.


What Paragraph IV challenges, settlements, or litigation affect ENOVID-E?

Litigation timing shapes:

  • Probability-weighted market share erosion
  • Launch date certainty for first-filers
  • At-risk launch risk for later filers

No case dockets, settlement terms, or FDA 180-day exclusivity triggers are available for ENOVID-E in the request.

Which companies are challenging ENOVID-E?

This depends on:

  • ANDA Paragraph IV notices
  • Filed ANDAs and applicant names
  • Court case captions and civil action numbers

No applicants or case identifiers are available.

Have there been any Hatch-Waxman settlements for ENOVID-E?

Settlement analysis requires:

  • Agreement date
  • Trigger dates (dismissal, covenant not to sue)
  • Carve-outs for products/strengths
  • “180-day exclusivity” impact

No settlement information is available.


What is the Orange Book status of ENOVID-E by dosage form and strength?

Orange Book status requires listing-by-strength data, including:

  • Drug product categories
  • Code and exclusivity blocks by strength
  • Patent coverage breadth across dosage forms

No Orange Book listing data is available.


How strong is the patent estate for ENOVID-E versus its closest competitors?

A comparative strength assessment depends on:

  • Number of patents per reference product
  • Coverage overlap with likely generic design changes
  • Remaining life at the current date
  • Litigation history

No patent estate can be assembled without product mapping.

ENOVID-E vs. which drugs in the same class?

Competitive set construction requires:

  • Active ingredient match and indication match
  • Route and dosage form comparability
  • Line of therapy positioning

No active ingredient is known.


What formulation patents protect ENOVID-E and what manufacturing/IP barriers exist?

Manufacturing and design-around feasibility depends on:

  • Composition and release mechanism claims
  • Control strategy and critical process parameters, if claimed
  • Packaging and stability claims, if claimed

No formulation patent data is available.


What biosimilar risk exists for ENOVID-E?

Biosimilar risk applies only if ENOVID-E is a biologic or biosimilar reference product.

Is ENOVID-E a biologic or a small molecule?

No drug type information is available.

Which biosimilar pathways would apply to ENOVID-E?

If biologic, the analysis would include:

  • BLA reference product identity
  • 12-year data exclusivity and 4-year exclusivity framework
  • Biosimilar interchangeability markers and expected competitive timing

No product identity exists.


How does payer reimbursement and channel positioning drive ENOVID-E sales?

Revenue trajectory must be anchored to:

  • Specialty vs non-specialty channel
  • Part D vs commercial vs government utilization patterns
  • WAC-to-net discounts and typical rebate structures for the class
  • Use constraints from payer clinical policies

No indication, label, route, and payer class are available for ENOVID-E.


What are the financial performance indicators for ENOVID-E over time?

A financial trajectory requires:

  • Company segment reporting (if disclosed)
  • Prescription volumes or market share
  • Real-world evidence of uptake curves post-launch
  • Price trajectory (net price, WAC changes)
  • Forecasts tied to exclusivity and generic erosion

No company-level data, launch date, or measurable market outcomes are available for ENOVID-E in the request.

Launch year revenue and unit trajectory

Not computable without:

  • Launch date
  • Market entry geography
  • Adoption metrics (TRx, scripts, share)

Pricing trajectory and net-to-gross

Not computable without:

  • WAC and net price disclosures
  • Contracting and rebate data

What geographic markets drive ENOVID-E revenue risk?

Geographic coverage depends on:

  • FDA approval coverage and labeling
  • Distributor agreements and tender ecosystems
  • Country-by-country reimbursement and HTA decisions

No geographic launch facts are available.


Key takeaways

  • ENOVID-E cannot be tied to a specific FDA product, active ingredient, patent record, or competitive set from the information provided.
  • Without product identity, market dynamics and financial trajectory cannot be quantified in a way that supports R&D, licensing, litigation, or investment decisions.
  • Patent and exclusivity timelines, generic/biosimilar risk, and revenue exposure require mapping ENOVID-E to an FDA reference product and Orange Book/Biosimilar records, which are not supplied here.

FAQs

1) What is the fastest way to estimate ENOVID-E’s generic erosion timeline?
Mapping ENOVID-E to its Orange Book reference listed drug and parsing unexpired patent expiration and exclusivity blocks.

2) How do formulation and method-of-use patents typically affect ENOVID-E’s market share after first generic entry?
Coverage breadth and claim types often determine whether generics can launch “skinny” or face design-around costs that slow volume capture.

3) Does ENOVID-E face biosimilar competition?
Only if ENOVID-E is a biologic reference product; otherwise the relevant risk is ANDA generics under Hatch-Waxman.

4) What determines net pricing impact for an ENOVID-E competitor after launch?
Contracting dynamics, payer formulary status, indication-specific clinical policy, and the competitive count at each strength/dosage form.

5) What litigation patterns most influence ENOVID-E’s at-risk launch probability?
Paragraph IV schedules, settlement terms, and the scope of injunctions or consent judgments tied to use codes.


References

No sources are provided or citable for ENOVID-E in the request.

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