Ex Parte Litwin - Page 27



            Appeal 2007-0635                                                                               
            Application 10/176,598                                                                         

            4. Appellant does not dispute that Ward teaches a “culling” operation but                      
            disagrees that Ward’s culling operation involves deleting a media file from the                
            memory source.                                                                                 
                  Applicant notes that although Ward discloses an operation of “culling” a                 
                  content list or the results used to form a play list (see Ward, col. 6, lines 61-        
                  64, and col. 8, lines 20-35), there is no disclosure or suggestion that such a           
                  culling operation will delete a media file (not results as in Ward) from a               
                  memory resource. Moreover, culling a play list is not the same thing as                  
                  removing a media file from a memory resource.                                            
            5. Col. 6, lines 61-64 of Ward states the following:                                           
                  At step S3, optionally, it then applies ranking or culling algorithms to the             
                  results, such as randomly removing elements, or only keeping the top N                   
                  most popular result items.                                                               
            6. When users lose interest in a media file on a media playback device, users                  
            will often delete that media file not only from the playlist but from the memory               
            resource storing it.                                                                           
            Differences between the prior art and the claims at issue.                                     
                  We incorporate herein the facts under Differences between the prior art and              
            the claims at issue of the Facts section for claims 17-19 and 21-23 above and add              
            the following.                                                                                 
            7. The difference centers on the term “culling” as used in Ward. If in culling                 
            the playlist Ward deletes a media file from the memory resource, then no                       
            difference exists between the claimed subject matter and Ward. If not, then the                
            difference would be that Ward does not disclose deleting a media file from the                 
            memory resource.                                                                               
            The level of ordinary skill in the pertinent art.                                              
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