Ex Parte LEID et al - Page 10


                 Appeal No. 2001-0531                                                         Page 10                    
                 Application No. 08/216,592                                                                              

                        Thus, the examiner has not disputed the evidence submitted by                                    
                 Appellants to show conception of the claimed method prior to the effective date                         
                 of the reference, coupled with due diligence to the filing of the application five                      
                 weeks later.  Since Rule 131 expressly allows an applicant to antedate a                                
                 reference by showing prior conception coupled with diligence to a later                                 
                 constructive reduction to practice, the examiner has not carried her burden of                          
                 explaining why Appellants’ 131 declarations are insufficient to overcome the                            
                 rejections based on Yu.  Since Appellants have apparently complied with the                             
                 requirements of Rule 131 and effectively removed Yu as prior art with respect to                        
                 the instant claims, the rejections based on Yu are reversed.                                            




























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