There are other possibilities. Such as a licensing system based around the idea of Harberger taxation. Basically, you make licensing of patents mandatory, and t

There are other possibilities. Such as a licensing system based around the idea of Harberger taxation. Basically, you make licensing of patents mandatory, and tax the patents based on the licensing fee. The higher the fee, the higher the tax. Or just cut the duration of patents. 20 years made sense back in the 1800s. These days it should probably be more like 7 years.