<SEC-DOCUMENT>0001047469-19-002050-index.html : 20190408
<SEC-HEADER>0001047469-19-002050.hdr.sgml : 20190408
<ACCEPTANCE-DATETIME>20190408161617
ACCESSION NUMBER:		0001047469-19-002050
CONFORMED SUBMISSION TYPE:	S-3ASR
PUBLIC DOCUMENT COUNT:		13
FILED AS OF DATE:		20190408
DATE AS OF CHANGE:		20190408
EFFECTIVENESS DATE:		20190408

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:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-230764
		FILM NUMBER:		19737610

	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:		S-3ASR
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-230764-01
		FILM NUMBER:		19737609

	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>S-3ASR
<SEQUENCE>1
<FILENAME>a2238386zs-3asr.htm
<DESCRIPTION>S-3ASR
<TEXT>
Document 1 - file: a2238386zs-3asr.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.1
<SEQUENCE>2
<FILENAME>a2238386zex-4_1.htm
<DESCRIPTION>EX-4.1
<TEXT>
Document 2 - file: a2238386zex-4_1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>3
<FILENAME>a2238386zex-5_1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 3 - file: a2238386zex-5_1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.2
<SEQUENCE>4
<FILENAME>a2238386zex-5_2.htm
<DESCRIPTION>EX-5.2
<TEXT>
Document 4 - file: a2238386zex-5_2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-8.1
<SEQUENCE>5
<FILENAME>a2238386zex-8_1.htm
<DESCRIPTION>EX-8.1
<TEXT>
Document 5 - file: a2238386zex-8_1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>6
<FILENAME>a2238386zex-23_1.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 6 - file: a2238386zex-23_1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>7
<FILENAME>a2238386zex-23_2.htm
<DESCRIPTION>EX-23.2
<TEXT>
Document 7 - file: a2238386zex-23_2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-25.1
<SEQUENCE>8
<FILENAME>a2238386zex-25_1.htm
<DESCRIPTION>EX-25.1
<TEXT>
Document 8 - file: a2238386zex-25_1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g78972kki001.jpg
<DESCRIPTION>G78972KKI001.JPG
<TEXT>
Document 9 - file: g78972kki001.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g78972kmi001.gif
<DESCRIPTION>G78972KMI001.GIF
<TEXT>
Document 10 - file: g78972kmi001.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>g78972ksi001.gif
<DESCRIPTION>G78972KSI001.GIF
<TEXT>
Document 11 - file: g78972ksi001.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>g78972ls03i001.gif
<DESCRIPTION>G78972LS03I001.GIF
<TEXT>
Document 12 - file: g78972ls03i001.gif

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>g78972ls03i002.gif
<DESCRIPTION>G78972LS03I002.GIF
<TEXT>
Document 13 - file: g78972ls03i002.gif

</DOCUMENT>
</SEC-DOCUMENT>