From the view of patent value, the longer technology of patent breadth means the stronger in the market with technological control and the higher of whose patent value. This paper investigates technology of patent breadth of the patent applied by foreign-owned enterprises in China Patent Office in the area of biotechnology, and analyzes the patent value of cooperative and non-cooperative patents. Conclusion is that patent value of cooperative patents is higher than non-cooperatives, and patent value between enterprises is higher than that of between research institutions.