This was my initial thought. But after consideration this would likely to just lead to companies creating holding/shell companies for groups of patents.
Effectively, Big Corp would spin up "Obvious Shopping Cart Patents, LLC", wholly owned by Big Corp, and register their patents for a given category through it. Then they could sell the entire company to another entity without the patents themselves transferring ownership.
The best fix for patents I can think of is simply lowering their lifetime to somewhere in the 2 - 5 year range.
Effectively, Big Corp would spin up "Obvious Shopping Cart Patents, LLC", wholly owned by Big Corp, and register their patents for a given category through it. Then they could sell the entire company to another entity without the patents themselves transferring ownership.
The best fix for patents I can think of is simply lowering their lifetime to somewhere in the 2 - 5 year range.