EXHIBIT 24.1
POWER OF ATTORNEY
Know all by these presents, that the undersigned hereby authorizes
Philip Maynard and Sam Auriemma of FileNet corporation, a Delaware
Corporation (the Company), singularly, to execute for and on behalf
of the undersigned, in the undersigned's capacity as an executive
officer of the Company, Forms 3, 4 and 5, and any amendments thereto
and cause such form(s) to be filed with the United States Securities
and Exchange Commission pursuant to Section 16(a) of the Securities
Act of 1934,relating to the undersigned's beneficial ownership of
securities in the Company. The undersigned hereby grants to each
such attorney-in-fact full power and authority to do and perform
any and every act and thing whatsoever requisite, necessary, or
proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full
power of substitution or revocation, hereby ratifying and
confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully
do or cause to be done by virtue of this power of attorney
and the rights and powers herein granted. The undersigned
acknowledges that the foregoing attorneys-in-fact, in serving
in such capacity at the request of the undersigned, are not
assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16
of the Securities Exchange Act of 1934.

This Power of Attorney shall remain in full force and
effect until the undersigned is no longer required to file
Forms 3, 4 and 5 with respect to the undersigned's holdings
of, and transactions in, securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.

In Witness Whereof, the undersigned has caused this Power of
Attorney to be executed as of this 29th day of October, 2004.
/s/ Ron L. Ercanbrack
RON L. ERCANBRACK