Ex parte MCCLELLAND - Page 3




          Appeal No. 95-3942                                                          
          Application No. 08/008,976                                                  


          for manipulation of the radiation throughout the entire length of           
          the beam, as is the case with metastable rare gas atoms.                    
               Appealed claim 6 stands rejected under 35 U.S.C. § 102(b) as           
          being anticipated by McMillan.                                              
               Upon careful consideration of the opposing arguments                   
          presented on appeal, we will not sustain the examiner's                     
          rejection.                                                                  
               It is fundamental that to constitute anticipation under                
          35 U.S.C. § 102 all material elements of a claim must be present            
          in one prior art source.  In re Marshall, 578 F.2d 301, 304,                
          198 USPQ 344, 346 (CCPA 1978); In re Kalm, 378 F.2d 959, 962,               
          154 USPQ 10, 12 (CCPA 1967).  In the present case, we concur with           
          appellant that McMillan fails to describe within the meaning of §           
          102 the claimed step of "directing a beam of metastable rare gas            
          atoms onto a surface of a lithographic resist" (emphasis added).            
          We appreciate that McMillan, at column 5, lines 24-28, discloses            
          that "significant radiation from the collision zone consists of             
          metastable or ground state atoms, free radicals, and                        
          electromagnetic radiation (light).  In general, this radiation              
          emanates in all directions from the collision zone."  However,              
          McMillan discloses that it is ions and vacuum ultraviolet light             
          that is directed onto the resist.  McMillan provides no                     
          description of directing a beam of metastable rare gas atoms onto           
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