"Last week, Zilka & Kotab filed suit against their most recent target, Google, in Tyler, Texas, saying that Google's Chrome browser infringed one of their patents. In the past nine months, Kotab and Zilka have filed nine lawsuits against 20 companies, using eight different patents. Many of those companies were sued two or three times. They have sued Microsoft five times, on five different patents. Total number of defendants named: 41."