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

of 25 June 1954 (Status as of 1 July 2023)

1Amended by No I of the FA of 3 Feb. 1995, in force since 1 Sept. 1995 (AS 1995 2879; BBl 1993 III 706).
Art. 142283

Pat­ents that have not yet lapsed when the Amend­ment to this Act of 22 June 2007 comes in­to force are sub­ject to the new law from that date. Grounds for nullity con­tin­ue to be gov­erned by the pre­vi­ous law.284

283In­ser­ted by No I of the FA of 17 Dec. 1976 (AS 1977 1997; BBl 1976 II 1). Amended by No I of the FA of 22 June 2007, in force since 1 Ju­ly 2008 (AS 2008 2551; BBl 2006 1).

284 Second sen­tence in­ser­ted by An­nex No 3 of the Pat­ent At­tor­ney Act of 20 March 2009, in force since 1 Ju­ly 2011 (AS 2011 2259; BBl 2008407).

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