-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 Tlrx5xhvDaJXtwxbd5vnLGSlKkE4ZpM49/AdK0hYQTMu0WG3bssgiVCAnQI0ibPd
 DLJ+lkPkqP0Vzi8MED6wGA==

<SEC-DOCUMENT>0000857005-08-000039.txt : 20080731
<SEC-HEADER>0000857005-08-000039.hdr.sgml : 20080731
<ACCEPTANCE-DATETIME>20080731134535
ACCESSION NUMBER:		0000857005-08-000039
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20080730
FILED AS OF DATE:		20080731
DATE AS OF CHANGE:		20080731

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			PORTER MICHAEL E
		CENTRAL INDEX KEY:			0001108494

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18059
		FILM NUMBER:		08981265

	BUSINESS ADDRESS:	
		STREET 1:		HARVARD BUSINESS SCHOOL
		STREET 2:		SOLDIERS FIELD ROAD
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02163

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PARAMETRIC TECHNOLOGY CORP
		CENTRAL INDEX KEY:			0000857005
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				042866152
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0930

	BUSINESS ADDRESS:	
		STREET 1:		140 KENDRICK STREET
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494
		BUSINESS PHONE:		7813705000

	MAIL ADDRESS:	
		STREET 1:		140 KENDRICK STREET
		CITY:			NEEDHAM
		STATE:			MA
		ZIP:			02494
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>porter07302008_ex.xml
</DOCUMENT>
</SUBMISSION>