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

¹ The cer­ti­fic­ate is null and void where:

a.²⁷³

it was gran­ted con­trary to Art­icle 140b, Art­icle 140c para­graph 2, Art­icle 146 para­graph 1 or Art­icle 147 para­graph 1;

b.

the pat­ent lapses be­fore its max­im­um term ex­pires (Art­icle 15);

c.

the pat­ent is de­clared null and void;

d.

the pat­ent is lim­ited to the ex­tent that the product for which the cer­ti­fic­ate was gran­ted is no longer covered by the claims;

e.

after the lapse of the pat­ent, grounds ex­ist which would have jus­ti­fied the de­clar­a­tion of nullity of the pat­ent un­der let­ter c or a lim­it­a­tion un­der let­ter d.

² Any per­son may bring an ac­tion to have the cer­ti­fic­ate de­clared null and void be­fore the au­thor­ity re­spons­ible for de­clar­ing the nullity of the pat­ent.