Ex Parte DAHLSTROM et al - Page 3




              Appeal No. 2001-0376                                                                                      
              Application No. 08/780,204                                                                                


                     Claims 1-6 and 8 stand rejected under 35 U.S.C. § 103 as unpatentable over                         
              either one of Zuercher or APA in view of any one of Tierney, Cullick, Witkin or Orlando.                  
                     Reference is made to the briefs and answer for the respective positions of                         
              appellants and the examiner.                                                                              
                                                 OPINION                                                                
                     We REVERSE.                                                                                        
                     In rejecting claims under 35 U.S.C. § 103, it is incumbent upon the examiner to                    
              establish a factual basis to support the legal conclusion of obviousness.  See In re Fine,                
              837 F.2d 1071, 1073, 5 USPQ2d 1596, 1598 (Fed. Cir. 1988).  In so doing, the                              
              examiner is expected to make the factual determinations set forth in Graham v, John                       
              Deere Co., 383 U.S. 1, 17, 148 USPQ 459, 467 (1966), and to provide a reason why                          
              one having ordinary skill in the pertinent art would have been led to modify the prior art                
              or to combine prior art references to arrive at the claimed invention.  Such reason must                  
              stem from some teachings, suggestions or implications in the prior art as a whole or                      
              knowledge generally available to one having ordinary skill in the art.  Uniroyal, Inc. v.                 
              Rudkin-Wiley Corp., 837 F.2d 1044, 1051, 5 USPQ2d 1434, 1438 (Fed. Cir.), cert.                           
              denied, 488 U.S. 825 (1988); Ashland Oil, Inc. v. Delta Resins & Refractories, Inc. , 776                 
              F.2d 281, 293, 227 USPQ 657, 664 (Fed. Cir. 1985), cert. denied, 475 U.S. 1017                            
              (1986); ACS Hosp. Sys., Inc. v. Montefiore Hosp., 732 F.2d 1572, 1577, 221 USPQ                           
              929, 933 (Fed. Cir. 1984).  These showings by the examiner are an essential part of                       

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