Exhibit 31.1
CERTIFICATIONS
I, John P. McLaughlin, President and Chief Executive Officer of PDL BioPharma, Inc., certify that:
(1) I have reviewed this Quarterly Report on Form 10-Q of PDL BioPharma, Inc.; and
(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report.
| Date: | May 23, 2013 | |
| | | |
| /s/ John P. McLaughlin | |
John P. McLaughlin President and Chief Executive Officer (Principal Executive Officer) | |
