inventors

Through the centuries, the umbrella morphed into a fashion statement that was also associated with decorum. Rankine wrote that during the Ming Dynasty (1368–1644), there was a system of umbrella etiquette at court, much like fan etiquette, with different meanings for different colors and positions.

If a USPTO patent examiner issues a second or final rejection of your invention, you might consider filing an ex parte appeal to the Patent Trial and Appeal Board (PTAB) to overturn it. When preparing an appeal brief outlining how you feel the examiner erred, keep in mind some important requirements and best practices.