Last Updated: November 8, 2026

Details for Patent: 3,957,982

Name: Drug Patent Intelligence for US Patent 3957982
Creator: DrugPatentWatch
License: https://www.drugpatentwatch.com/terms.php

« Back to Dashboard

Summary for Patent: 3,957,982

Title:	Method for contraception by the application of combination-type sequential preparations
Abstract:	Method of contraception in which an estrogen and a progestagen are orally administered daily for 21 days, the first 4-6 days at a low contraceptively effective daily dose, the next 4-6 days at a daily estrogen dose 1-2 times and a daily progestrogen dose 1-1.5 times that of the first 4-6 days, and for the next 9-11 days at a daily estrogen dose from that of the first 4-6 days to that of the next 4-6 days and a daily progestogen dose higher than either prior daily dose, up to 3 times that of the initial dose, followed by 7 days without hormone administration.
Inventor(s):	Ursula Lachnit-Fixson, Alan G. Pitchford
Assignee:	Bayer Pharma AG
Application Number:	US05/535,575
Patent Claim Types: see list of patent claims	Use; Composition; Delivery; Dosage form;

Drugs Protected by US Patent 3,957,982

Glossary

Subscribe to access the full database, or Start Trial
Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate
>Applicant	>Tradename	>Generic Name	>Dosage	>NDA	>Approval Date	>TE	>Type	>RLD	>RS	>Patent No.	>Patent Expiration	>Product	>Substance	>Delist Req.	>Patented / Exclusive Use	>Submissiondate

Foreign Priority and PCT Information for Patent: 3,957,982

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
	2365103	Dec 21, 1973

International Family Members for US Patent 3,957,982

Subscribe to access the full database, or Start Trial
Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Australia	7670874	⤷ Start Trial
Belgium	823689	⤷ Start Trial
Canada	1029303	⤷ Start Trial
Cyprus	1065	⤷ Start Trial
Germany	2365103	⤷ Start Trial
Denmark	155308	⤷ Start Trial
Denmark	667674	⤷ Start Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

Make Better Decisions: Try a trial or see plans & pricing

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. We do not provide individual investment advice. This service is not registered with any financial regulatory agency. The information we publish is educational only and based on our opinions plus our models. By using DrugPatentWatch you acknowledge that we do not provide personalized recommendations or advice. thinkBiotech performs no independent verification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.