Federal Act
on Patents for Inventions
(Patents Act, PatA)¹

¹ Where, in re­spect of one and the same in­ven­tion, two pat­ents hav­ing the same pri­or­ity date have been gran­ted to the same in­vent­or or to his suc­cessor in title, the pat­ent res­ult­ing from the na­tion­al ap­plic­a­tion ceases to have ef­fect as of the date of the grant of the pat­ent res­ult­ing from the in­ter­na­tion­al ap­plic­a­tion, ir­re­spect­ive of wheth­er the pri­or­ity of the na­tion­al ap­plic­a­tion is claimed for the pat­ent res­ult­ing from the in­ter­na­tion­al ap­plic­a­tion or wheth­er the pri­or­ity of the in­ter­na­tion­al ap­plic­a­tion is claimed for the pat­ent res­ult­ing from the na­tion­al ap­plic­a­tion.

² Art­icle 27 ap­plies ac­cord­ingly.