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.
Furthermore, because no examination of the patentability of the application in view of the prior art is performed, the USPTO fee for filing a provisional patent application is significantly lower (US$ 260 as of December 2014) than the fee required to file a standard non-provisional patent application.o obtain the benefit of the provisional filing date, a non-provisional patent application must be filed, claiming benefit of the filing date of one or more specific provisional patent applications, prior to their expiration. The provisional patent application is only pending for 12 months prior to becoming abandoned.