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Exhibit 23.1
CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS
As independent public accountants, we hereby consent to the
incorporation of our report dated February 9, 2000 included in this Form 8-K,
into Commerce One, Inc.'s previously filed Registration Statement on Form S-3
No. 333-41748 and the Registration Statements on Form S-8 No. 333-82051
pertaining to the 1997 Incentive Stock Option Plan, 1999 Employee Stock
Purchase Plan, and 1999 Director Option Plan; No. 333-92671 pertaining to the
CommerceBid.Com, Inc. 1999 Equity Incentive Plan; No. 333-95171 pertaining to
the Mergent Systems, Inc. 1999 Stock Option Plan; No. 333-96505 pertaining to
the 1997 Incentive Stock Option Plan; No. 333-33324 pertaining to the 1999
Employee Stock Purchase Plan; and No. 333-33328 pertaining to the 1999
Nonstatutory Stock Option Plan.
/S/ ARTHUR ANDERSEN LLP
Vienna, Virginia
July 25, 2000
