UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	July 16, 2013 12:00 P.M.

Form:	S-4
CIK: 0001577966 Company Name: Corporate Office Properties, L.P. File Number: 333-189188
CIK: 0000860546 Company Name: CORPORATE OFFICE PROPERTIES TRUST File Number: 333-189188-01