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COLUMBIA, Md.--([ BUSINESS WIRE ])--Corporate Office Properties Trust (COPT) (NYSE: OFC) an office real estate investment trust (REIT) that focuses primarily on serving the specialized requirements of U.S. Government and Defense Information Technology tenants, announced that, for the eighth consecutive year, it has won the aNational Commercial Real Estate Customer Service Award for Excellencea by achieving the aBest In The Industrya ranking in 2011 by CEL & Associates, Inc. (CEL). CEL is the nationas largest surveyor of tenant satisfaction within the real estate industry. The aNational Commercial Real Estate Customer Service Award for Excellencea is the largest of CELas categories and pertains to companies owning and/or managing over 100 properties. The aBest In The Industrya ranking is for providing the highest level of quality and service to tenants.

"National Commercial Real Estate Customer Service Award for Excellence"

aWe are tremendously honored to win this award for the eighth year in a row, which recognizes that our customers appreciate our commitment to creating environments that inspire success,a stated Randall M. Griffin, Chief Executive Officer for Corporate Office Properties Trust. aIn this difficult market, our continued excellence in customer service is a tribute to our team and its efforts,a he added.

Company Information

COPT is an office REIT that focuses primarily on strategic customer relationships and specialized tenant requirements in the U.S. Government and Defense Information Technology sectors and Data Centers serving such sectors. The Company acquires, develops, manages and leases office and data center properties that are typically concentrated in large office parks primarily located adjacent to government demand drivers and/or in strong markets that we believe possess growth opportunities. As of December 31, 2011, the Companyas consolidated portfolio consisted of 238 office properties totaling 20.5million rentable square feet. The Companyas portfolio primarily consists of technically sophisticated buildings in visually appealing settings that are environmentally sensitive, sustainable and meet unique customer requirements. COPT is an S&P MidCap 400 company and more information can be found at [ www.copt.com ].

Forward-Looking Information

This press release may contain aforward-lookinga statements, as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, that are based on the Companyas current expectations, estimates and projections about future events and financial trends affecting the Company.Forward-looking statements can be identified by the use of words such as amay,a awill,a ashould,a acould,a abelieve,a aanticipate,a aexpect,a aestimate,a aplana or other comparable terminology.Forward-looking statements are inherently subject to risks and uncertainties, many of which the Company cannot predict with accuracy and some of which the Company might not even anticipate.Accordingly, the Company can give no assurance that these expectations, estimates and projections will be achieved.Future events and actual results may differ materially from those discussed in the forward-looking statements.

Important factors that may affect these expectations, estimates, and projections include, but are not limited to:

• general economic and business conditions, which will, among other things, affect office property and data center demand and rents, tenant creditworthiness, interest rates and financing availability;
• adverse changes in the real estate markets including, among other things, increased competition with other companies;
• governmental actions and initiatives, including risks associated with the impact of a government shutdown, budgetary reductions or impasses, such as a reduction in rental revenues, non-renewal of leases, and/or a curtailment of demand for additional space by strategic tenants;
• the Companyas ability to sell properties included in its Strategic Reallocation Plan;
• the Companyas ability to borrow on favorable terms;
• risks of real estate acquisition and development activities, including, among other things, risks that development projects may not be completed on schedule, that tenants may not take occupancy or pay rent or that development or operating costs may be greater than anticipated;
• risks of investing through joint venture structures, including risks that the Companyas joint venture partners may not fulfill their financial obligations as investors or may take actions that are inconsistent with the Companyas objectives;
• changes in the Companyas plans or views of market economic conditions or failure to obtain development rights, either of which could result in recognition of impairment losses;
• the Companyas ability to satisfy and operate effectively under Federal income tax rules relating to real estate investment trusts and partnerships;
• the dilutive effect of issuing additional common shares; and
• environmental requirements.

The Company undertakes no obligation to update or supplement any forward-looking statements. For further information, please refer to the Companyas filings with the Securities and Exchange Commission, particularly the section entitled aRisk Factorsa in Item 1A of the Companyas Annual Report on Form 10-K for the year ended December 31, 2011.