Brocade Communications ( BRCD) terminated its stockholder rights plan, or "poison pill," effective Tuesday, the company said.

The plan was adopted in 2002. A poison pill is an antitakeover measure that's meant to make it too expensive for an acquirer to buy a company without the cooperation of its management.

Shares of Brocade were up 14 cents, or 1.6%, at $8.72.

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