Ex parte DULL - Page 3




            Appeal No. 1998-1224                                                      
            Application No. 08/465,077                                                


            of the respective positions of the examiner and the                       
            appellant, we agree with appellant that the examiner has                  
            failed to establish noncompliance with any of the                         
            provisions of 35 U.S.C. § 112, first paragraph.                           
            Accordingly, we cannot sustain the rejection at issue.                    
                 The rejection is framed in language which appears to                 
            focus upon the written description requirement of 35                      
            U.S.C.  § 112.  On the other hand, appellant interprets                   
            the rejection as translating into an issue of enablement.                 
            In either case, it is the examiner who has the burden of                  
            persuasion to establish noncompliance with the provisions                 
            of 35 U.S.C. § 112.  In this regard, see In re Edwards,                   
            568 F.2d 1349, 1354, 196 USPQ 465, 469 (CCPA 1978) as to                  
            the written description requirement; and In re Marzocchi,                 
            439 F.2d 220, 223-24, 169 USPQ 367, 369-70 (CCPA 1971) as                 
            to the enablement requirement.  We find that the examiner                 
            has failed to provide persuasive reasons to support the                   
            rejection at issue.                                                       
                 The examiner merely asserts that there is no written                 
            disclosure of the terminal etch rate, as claimed, in a                    
            generic sense, and that that particular terminal etch                     
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