A patent is granted with an assumption that it is novel, non-obvious and have inventive step. Anything in public domain which affects any of these three criteria’s can be a basis for patent invalidation. Recently, PUMA’s design patent was invalidated due to an image posted on social media by Rihanna. Here is what you need to know about it. https://bit.ly/3lQvxYJ
In one of the interesting cases, the European Court of Justice Rules on a pertinent question of an assertion of a mark in an invalidity proceeding, which expires within that proceedings. Read more: https://bit.ly/3pZyfLt