Last reviewed on RxList 9/14/2016. Estrace (estradiol) vaginal cream is a preparation of estrogen, a female hormone, for topical application to the vaginal area used to treat certain symptoms of menopause such as dryness, burning, and itching of the vaginal area and urgency or irritation with urination.
A provisional application for patent lasts 12 months from its filing date. The USPTO will not grant extensions for any reason. The inventor(s) must file a Non-Provisional Patent Application within that period to take advantage of the Provisional Application for Patent's filing date.
How Long is the âPatent Pendingâ Status? Patent applications filed in the United States typically have âpatent pendingâ for 1 to 3 years. However, it is not uncommon for some patent applications (e.g. software and electronic applications) to have patent pending status for 3 to 5+ years.