Did you try searching the forum for this topic? I tried searching for "copy paste disable" and found the following.
http://h30499.www3.hp.com/t5/Quality-Center-Support-and-News/how-to-disable-copy-paste-option-in-defect-module/m-p/5571493#M69484
http://h30499.www3.hp.com/t5/Quality-Center-Support-and-News/how-to-disable-copy-paste-option-in-defect-module/m-p/5571493#M69484
