What’s Wrong with the Patent System? Fuzzy Boundaries and the Patent Tax

The authors provide evidence that software patents have more severe boundary problems and generate greater litigation costs than most other patents. Software patents tend to perform badly because the associated property rights are often expressed quite abstractly. The problem of mapping words to technology is difficult for any kind of technology, but it is especially difficult for software inventions because of the abstract nature of the technology. The problem has been made worse because when the courts have considered software inventions they have relaxed patent law doctrines that work to limit abstraction in other areas of technology. As a result, patent–based property rights to software inventions are not tethered to a specific device or to a specific physical or chemical process. Ironically, verbal descriptions corresponding to precise mathematical representations may be ambiguous; this is because of the inherent abstraction of the mathematical representations.