Microsoft famously has patents covering aspects of the ribbon interface in Microsoft office, which of course this suite must implement. https://en.wikipedia.org/wiki/Ribbon_(user_interface)#Patent...

Meanwhile, Wikipedia has a policy that says screenshots of applications have to be "as small a version as possible" in order to meet the fair use exception for presentation of copyright work. I can only imagine an exact clone of the interface could be similarly ruled to infringe on Adobe's intellectual property.