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BIOGEN INC.

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BIOGEN INC.

CIK:0000875045|SEC Filings

ARTICLES AND BYLAWS

EX-3.1
d840763dex31.htm
2024-06-25T00:00:00Z
EX-3.1
d850833dex31.htm
2023-12-12T00:00:00Z
EX-3.2
d850833dex32.htm
2023-12-12T00:00:00Z
EX-3.1
d454539dex31.htm
2023-07-31T00:00:00Z
EX-3.1
d500907dex31.htm
2023-04-18T00:00:00Z
EX-3.1
d406783dex31.htm
2017-06-09T00:00:00Z
EX-3.2
d406783dex32.htm
2017-06-09T00:00:00Z
EX-3.2
d362642dex32.htm
2012-07-24T00:00:00Z
EX-3.1
d362642dex31.htm
2012-07-24T00:00:00Z
EX-3.1
d365484dex31.htm
2012-06-13T00:00:00Z
EX-3.2
d365484dex32.htm
2012-06-13T00:00:00Z
EX-3.4
a2122254zex-3_4.htm
2003-11-12T00:00:00Z
EX-3.1
a2113527zex-3_1.htm
2003-07-16T00:00:00Z
EX-3.2
a2113527zex-3_2.htm
2003-07-16T00:00:00Z
EX-3.1
b72570biexv3w1.htm
2008-10-21T00:00:00Z
EX-3.1
b72581biexv3w1.htm
2008-10-17T00:00:00Z
EX-3.1
b57116biexv3w1.htm
2005-10-03T00:00:00Z
EX-3.2
b86593exv3w2.htm
2011-07-26T00:00:00Z
EX-3.1
b86593exv3w1.htm
2011-07-26T00:00:00Z
EX-3.1
b86869exv3w1.htm
2011-06-07T00:00:00Z