    <SEC-DOCUMENT>0001104659-22-044165-index.html : 20220408
    <SEC-HEADER>0001104659-22-044165.hdr.sgml : 20220408
    <ACCEPTANCE-DATETIME>20220408153928
    ACCESSION NUMBER:		0001104659-22-044165
    CONFORMED SUBMISSION TYPE:	S-3ASR
    PUBLIC DOCUMENT COUNT:		16
    FILED AS OF DATE:		20220408
    DATE AS OF CHANGE:		20220408
    EFFECTIVENESS DATE:		20220408

    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:	333-264198
    		FILM NUMBER:		22816820

    	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:	333-264198-01
    		FILM NUMBER:		22816821

    	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>tm2212150-1_s3asr.htm
    <DESCRIPTION>S-3ASR
    <TEXT>
    Document 1 - file: tm2212150-1_s3asr.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-5.1
    <SEQUENCE>2
    <FILENAME>tm2212150d2_ex5-1.htm
    <DESCRIPTION>EXHIBIT 5.1
    <TEXT>
    Document 2 - file: tm2212150d2_ex5-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-5.2
    <SEQUENCE>3
    <FILENAME>tm2212150d2_ex5-2.htm
    <DESCRIPTION>EXHIBIT 5.2
    <TEXT>
    Document 3 - file: tm2212150d2_ex5-2.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-8.1
    <SEQUENCE>4
    <FILENAME>tm2212150d2_ex8-1.htm
    <DESCRIPTION>EXHIBIT 8.1
    <TEXT>
    Document 4 - file: tm2212150d2_ex8-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-22.1
    <SEQUENCE>5
    <FILENAME>tm2212150d2_ex22-1.htm
    <DESCRIPTION>EXHIBIT 22.1
    <TEXT>
    Document 5 - file: tm2212150d2_ex22-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-23.1
    <SEQUENCE>6
    <FILENAME>tm2212150d2_ex23-1.htm
    <DESCRIPTION>EXHIBIT 23.1
    <TEXT>
    Document 6 - file: tm2212150d2_ex23-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-25.1
    <SEQUENCE>7
    <FILENAME>tm2212150d2_ex25-1.htm
    <DESCRIPTION>EXHIBIT 25.1
    <TEXT>
    Document 7 - file: tm2212150d2_ex25-1.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-FILING FEES
    <SEQUENCE>8
    <FILENAME>tm2212150d2_ex-filingfees.htm
    <DESCRIPTION>EX-FILING FEES
    <TEXT>
    Document 8 - file: tm2212150d2_ex-filingfees.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>image_003.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 9 - file: image_003.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>image_004.gif
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: image_004.gif

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>tm2212150d2_ex25-1img002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: tm2212150d2_ex25-1img002.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>tm2212150d2_ex25-1img003.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: tm2212150d2_ex25-1img003.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>tm2212150d2_ex25-1img004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 13 - file: tm2212150d2_ex25-1img004.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>tm2212150d2_ex5-1img1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 14 - file: tm2212150d2_ex5-1img1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>tm2212150d2_ex5-2img1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 15 - file: tm2212150d2_ex5-2img1.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>tm2212150d2_ex8-1img004.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 16 - file: tm2212150d2_ex8-1img004.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>