If you want to take a license on a patent or a patent family you will need a reliable evaluation regarding the validity of the licensed property rights.
A validity opinion informs you about the scope of the property rights in question and whether the property rights can be rescinded due to an opposition or nullity suit.
Depending on the strength and scope of the property right in question or of the property rights family in question, we also advise you regarding adequate license fees or respectively adequate downpayments.
Thanks to this information you will be able to decide pro or contra a license.