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Document And Entity Information
9 Months Ended
Jul. 31, 2011
Sep. 09, 2011
Document And Entity Information  
Document Type10-Q 
Amendment Flagfalse 
Document Period End DateJul. 31, 2011
Document Fiscal Year Focus2011 
Document Fiscal Period FocusQ3 
Entity Registrant NameCOPYTELE INC 
Entity Central Index Key0000715446 
Current Fiscal Year End Date--10-31 
Entity Filer CategorySmaller Reporting Company 
Entity Common Stock, Shares Outstanding 174,438,632