Oxford University Press and Equerion Information Services have partnered to publish the World Manual on Patents. Updated and reissued annually in 6 convenient paperback volumes, this work includes the practice, proceedings, and application handling for patents in more than 235 countries. Theinformation is collected from official trademark and patent offices, specialized publications, and web sites. A worldwide network of local associates in more than 100 law firms is used to verify the accuracy of the data.