Singular Value Decomposition was held back for 20 years by patents owned by BellCore. I had to scrap large interesting portions of Dowser to avoid potential problems.
As a counterexample, Autonomy has a patent on Bayesian text classification dating from the late 90's. I've always wondered why they didn't say anything after Paul popularized it for spam filtering.
As a counterexample, Autonomy has a patent on Bayesian text classification dating from the late 90's. I've always wondered why they didn't say anything after Paul popularized it for spam filtering.