Drospirenone; Estradiol Patent Expiration

Drospirenone; Estradiol was first introduced by Bayer Healthcare Pharmaceuticals Inc in its drug Angeliq on Sep 28, 2005.


Drospirenone; Estradiol Patents

Given below is the list of patents protecting Drospirenone; Estradiol, along with the drug name that holds that patent and the company name owning that drug.

Drug Used in Drug Patent Number Drug Patent Title Drug Patent Expiry Drug Owner
Angeliq US6933395 PROCESSING FOR PRODUCING OF DROSPIRENONE (6β, 7β, 15β, 16β-DIMETHYLENE-3-OXO-17α-PREGN-4-EN-21, 17-CARBOLACTONE, DRSP) AS WELL AS 7α-(3-HYDOXY-1-PROPLY)-6β, 7β; 15β, 16β-DIMETHYLENE-5β-ANDROSTANE-3β, 5,17β-TRIOL(ZK 92836) AND 6β, 7β; 15β, 16β-DIMETHYLENE-5β-HYDROXY Aug 11, 2017

(Expired)

Bayer Hlthcare
Angeliq US8906890 Very low-dosed solid oral dosage forms for HRT Oct 22, 2031 Bayer Hlthcare


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