Of course, an allowance for a patent application i

Of course, an allowance for a patent application is not the same as acceptance and granting of a patent, nor does it guarantee a patent will ever be granted. It does protect the applicant during the USPTO review period which can be lengthy. GW has a number of hurdles and years to go in getting their medicinal to market given the rigorous protocols and trials the FDA imposes. There's no guarantee of FDA final approval, either.