Ex Parte YERXA et al - Page 6


                Appeal No.  2002-1121                                                     Page 6                  
                Application No.  09/171,169                                                                       

                sclera venus, or the canal of Sclemm, is not part and is unrelated to the                         
                paranasal sinuses.                                                                                
                       The examiner responds by arguing that “the most common malfunction of                      
                the lacrimal drainage system, the system that promotes tears or stimulates tear                   
                production, is nasolacrial duct obstruction,” citing page 3 of the Specification.                 
                Examiner’s Answer, page 6.  According to the examiner, that recognition “is key”                  
                for establishing why one of ordinary skill in the art would have been motivated to                
                use the nucleoside phosphates taught by Jacobus for the treatment of sinusits for                 
                the stimulation of tear and mucin production in eyes.                                             
                       It appears as if the examiner has misapprehended the claimed invention.                    
                The invention is drawn to a method of stimulating tear secretion and mucin                        
                production in the eye—not a method of increasing drainage from the eye through                    
                the removal of an obstruction of the nasolacrimal duct.  The Specification at page                
                3 states that the lacrimal system has two components—a secretory part, which                      
                produces tears, and an excretory part, which drains into the nose.  Although the                  
                specification acknowledges that the “most common malfunction of the lacrimal                      
                drainage system is nasolacrimal duct obstruction, which results in the stasis of                  
                tears in the lacrimal sac,” and also teaches that the compounds of the claimed                    
                method may also be used to enhance the drainage of the lacrimal system, that is                   
                presented as an alternate embodiment to the method of stimulating tear                            
                secretion.  See, e.g.. Specification, page 6.                                                     
                       As explained by appellants, however, it is the surface of the eye, or the                  
                conjunctiva, which stimulates tear and mucin production, see Reply Brief,                         





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