Data requirements for a sufficiently enabled patent specification – How much experimental detail is enough?

One of the most precarious decisions to make during the patenting process is when to commence filing. There is an inherent tension between getting an early priority date which is potentially light on data, as opposed to accumulating plenty of supporting data but having a later than desirable priority date.

In some cases, for instance where there is an unintended or ill-advised early disclosure of the invention or a critical commercial development, the requirement for an early priority date overrides any consideration of the contents of the patent specification and the only course of action is to include whatever data is at hand. Fortunately, in most cases though, patent applicants have a degree of discretion about when to commence filing, in which case the balance between an early priority date and potential patent quality is an issue.