Filed by International Paper Company
                          Pursuant to Rule 425 under the Securities Act of 1933
                                       and deemed filed pursuant to Rule 14a-12
                                         of the Securities Exchange Act of 1934
                            Subject Company: Champion International Corporation
                                                 Commission File No.: 001-03053

International Paper Company issued the following press release on May 10, 2000.


International Paper Co. (ticker: IP, exchange: The
                 New York Stock Exchange) News Release -
                 Wednesday, May 10, 2000

                          International Paper's Bid for
                          Champion Declared 'Superior'

                   PURCHASE, N.Y., May 10 /PRNewswire/ -- International Paper
                   (NYSE: IP) announced today that the Board of Directors of
                   Champion International (NYSE: CHA) has declared IP's revised
                   bid for Champion as superior to that submitted by
                   UPM-Kymmene. International Paper submitted a revised bid of
                   $75 per share in cash and stock on Tuesday evening after
                   being informed that UPM-Kymmene had substantially revised its
                   original offer for Champion.

                   International Paper's offer is valued at approximately $7.3
                   billion, excluding $2.3 billion in net debt. The total
                   purchase price would be paid with $50 in cash and $25 in
                   stock. International Paper expects to promptly commence a
                   tender offer for the cash portion of its transaction
                   following the expiration of the three day termination period
                   required by the merger agreement between Champion and
                   UPM-Kymmene. The offer is backed by fully committed
                   financing.

                   "We've said all along that bringing together International
                   Paper and Champion makes good sense because of the tremendous
                   opportunities presented by a combined organization," said
                   Dillon. "Our superior offer is consistent with what we said
                   two weeks ago -- we wanted a deal that creates value for
                   International Paper shareowners and for Champion
                   shareowners."

                   "Champion will be an important addition to our core
                   businesses and will help improve our profitability within the
                   first year. We look forward to closing this deal as quickly
                   as possible," added Dillon.

                   The merger is expected to result in $425 million
                   in annual cost savings as a result of integrating
                   manufacturing operations, reductions in duplicate overhead
                   costs and improved purchasing efficiencies, principally in
                   North America. In addition, the combined company will be able
                   to reduce capital expenditures below the amount spent as
                   separate entities. The merger will be additive to
                   International Paper's earnings in the first full year after
                   completion of the deal and over the life of the cycle.

                   The transaction is subject to regulatory approvals, which are
                   not expected to delay completion of the transaction.

                   International Paper (www.internationalpaper.com) is the
                   world's largest paper and forest products company.
                   Businesses include printing papers, packaging, building
                   materials, chemical products and distribution. As the
                   largest private landowner in the U.S., the company manages
                   its forest under the principles of the Sustainable Forestry
                   Initiative (SFI(SM)) program, a system that ensures the
                   perpetual growing and harvesting of trees while protecting
                   wildlife, plants, soil, air and water quality. Headquartered
                   in the United States at Purchase, N.Y., International Paper
                   has operations in nearly 50 countries, employs nearly
                   100,000 people and exports its products to more than 130
                   nations.

                   Statements in this press release that are not historical are
                   forward-looking statements, which are subject to risks and
                   uncertainties that could cause actual results to differ
                   materially. The expected increases in profitability and
                   reduction in costs are subject to risks and uncertainties,
                   including general economic conditions, fluctuation in supply
                   and demand, operating rates and competitive pricing pressures
                   and whether anticipated savings from merger and other
                   restructuring activities can be achieved.
                   SOURCE International Paper

                   CONTACT: Jack Cox, media, 914-397-1952, or
                   Carol Tutundgy, investors, 914-397-1632, or
                   Rochelle Weitzner, investors, 914-397-1623, all
                   of International Paper/