And so we have hundreds of patents.

So what to make of this? We checked in with a couple of patent experts to make more sense of the ruling.

Twenty years from now, we might be in a very different place and patents are part of the problem, not the solution.

The therapies are now sold in four pharmacies and one hospital, and their developers are seeking patents for the products.

They then license or swap the patents "essential" to this standard under "fair and reasonable" conditions.