The same as normal asset depreciation.It would be over the life...

The same as normal asset depreciation.

It would be over the life of the specific patent or trademark. They would be making an estimate of how long they believe the patent has an identifiable value, which would consider things like how long does the underlying physical asset operate, how long does it give them a competitive advantage. This can be reconsidered at any point in time based on accounting rules.

At the moment it would be very difficult to give it a life beyond the expected cash duration based on contracted activities. So life would be assumed very short. If they can prove commercial viability, they may then extend the life and slow down the depreciation rate.