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.
From the day you file, you will have a year to convert your provisional application. Conversion involves filing a non-provisional patent application that includes a reference to your provisional patent application. In that way, a good provisional patent definition is a placeholder. It holds a place in line for your future non-provisional application.