Ex parte NATTA et al. - Page 5




          Appeal No. 95-2683                                                          
          Application No. 07/883,912                                                  


          appellants claim priority under 35 U.S.C. § 120 and 35 U.S.C.               
          § 119, respectively.  For instance, the examiner explains that              
          coordination catalysts "were known to be able to be formed                  
          from titanium chloride and a Group I alkyl compound or an                   
          elemental non-transition metal such as aluminum or lithium"                 
          (page 4 of Answer), and the applications upon which appellants              
          base priority do not disclose that the catalysts of the                     
          present invention are formed from such materials.  Also, the                
          examiner points out that there is no evidence of record which               
          establishes that the catalyst compositions described in the                 
          original applications were known by those skilled in the art                
          as "coordination catalysts."  On the other hand, our review of              
          appellants' principal and Reply Briefs reveals that appellants              
          have not advanced any substantive argument that rebuts the                  
          examiner's position.  Indeed, appellants' principal and Reply               
          Briefs present no argument that the claim language                          
          "coordination catalyst" is described in the applications upon               
          which priority is based.  Consequently, we will sustain the                 
          examiner's rejection.                                                       
               Although appellants have presented no substantive                      
          arguments refuting the rejection discussed above, appellants                

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