<SEC-DOCUMENT>0000860546-20-000026-index.html : 20200730
<SEC-HEADER>0000860546-20-000026.hdr.sgml : 20200730
<ACCEPTANCE-DATETIME>20200730191741
ACCESSION NUMBER:		0000860546-20-000026
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		23
CONFORMED PERIOD OF REPORT:	20200730
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20200730
DATE AS OF CHANGE:		20200730

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CORPORATE OFFICE PROPERTIES TRUST
		CENTRAL INDEX KEY:			0000860546
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				232947217
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14023
		FILM NUMBER:		201061919

	BUSINESS ADDRESS:	
		STREET 1:		6711 COLUMBIA GATEWAY DRIVE
		STREET 2:		SUITE 300
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046
		BUSINESS PHONE:		4432855400

	MAIL ADDRESS:	
		STREET 1:		6711 COLUMBIA GATEWAY DRIVE
		STREET 2:		SUITE 300
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CORPORATE OFFICE PROPERTIES TRUST INC
		DATE OF NAME CHANGE:	19980105

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROYALE INVESTMENTS INC
		DATE OF NAME CHANGE:	19930328

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROYALE REIT INC
		DATE OF NAME CHANGE:	19600201

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Corporate Office Properties, L.P.
		CENTRAL INDEX KEY:			0001577966
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				232930022
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	333-189188
		FILM NUMBER:		201061918

	BUSINESS ADDRESS:	
		STREET 1:		6711 COLUMBIA GATEWAY DRIVE
		STREET 2:		SUITE 300
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046
		BUSINESS PHONE:		443-285-5400

	MAIL ADDRESS:	
		STREET 1:		6711 COLUMBIA GATEWAY DRIVE
		STREET 2:		SUITE 300
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>copt06302020earnings8k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: copt06302020earnings8k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>copt06302020ex991.htm <DESCRIPTION>EXHIBIT 99.1 <TEXT> Document 2 - file: copt06302020ex991.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>3 <FILENAME>ofc-20200730.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT <TEXT> Document 3 - file: ofc-20200730.xsd
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.CAL <SEQUENCE>4 <FILENAME>ofc-20200730_cal.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION CALCULATION LINKBASE DOCUMENT <TEXT> Document 4 - file: ofc-20200730_cal.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.DEF <SEQUENCE>5 <FILENAME>ofc-20200730_def.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION DEFINITION LINKBASE DOCUMENT <TEXT> Document 5 - file: ofc-20200730_def.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>6 <FILENAME>ofc-20200730_lab.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT <TEXT> Document 6 - file: ofc-20200730_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>7 <FILENAME>ofc-20200730_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT <TEXT> Document 7 - file: ofc-20200730_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>a2020q2cover.jpg <TEXT> Document 8 - file: a2020q2cover.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>9 <FILENAME>chart-2e06f654ebc4545e8bfa03.jpg <TEXT> Document 9 - file: chart-2e06f654ebc4545e8bfa03.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>10 <FILENAME>chart-6ed0a7c16f465618856a03.jpg <TEXT> Document 10 - file: chart-6ed0a7c16f465618856a03.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>chart-214d64a8f5705938bf0a03.jpg <TEXT> Document 11 - file: chart-214d64a8f5705938bf0a03.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>12 <FILENAME>chart-221173a99408583eb85.jpg <TEXT> Document 12 - file: chart-221173a99408583eb85.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>13 <FILENAME>chart-f06f49cf17bc51349d3a03.jpg <TEXT> Document 13 - file: chart-f06f49cf17bc51349d3a03.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>14 <FILENAME>logo2dtd021015a01a16.jpg <TEXT> Document 14 - file: logo2dtd021015a01a16.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>15 <FILENAME>tableofcontentsq220a04.jpg <TEXT> Document 15 - file: tableofcontentsq220a04.jpg
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>16 <FILENAME>copt06302020earnings8k_htm.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 16 - file: copt06302020earnings8k_htm.html
Document 16 - RAW XML: copt06302020earnings8k_htm.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>17 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 17 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>18 <FILENAME>Financial_Report.xlsx <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 18 - file: Financial_Report.xlsx
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>19 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 19 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>20 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 20 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>21 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 21 - file: FilingSummary.html
Document 21 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>JSON <SEQUENCE>23 <FILENAME>MetaLinks.json <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 23 - file: MetaLinks.json
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>24 <FILENAME>0000860546-20-000026-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 24 - file: 0000860546-20-000026-xbrl.zip
</DOCUMENT> </SEC-DOCUMENT>