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2004/4/2 Aventis


Aventis Supervisory Board unanimously invites Novartis to enter into negotiations about a potential combination - Aventis Supervisory Board decides on resolutions to be proposed to shareholders at the next General Meeting
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At its meeting today, the Supervisory Board of Aventis reviewed the current status of the unsolicited offer from Sanofi-Synthelabo of January 26, 2004, and reiterated that this bid is not in the best interests of Aventis, its shareholders and its employees.

During the meeting, the Management Board reported to the Supervisory Board on the discussions between Aventis and Novartis. After consideration of this report, the Supervisory Board unanimously mandated the Management Board to enter into negotiations with Novartis on the terms and conditions of a potential combination and to pursue discussions with the relevant authorities in France and Germany to address their specific issues. Of the 16 Supervisory Board members, 15 were present or represented at the meeting including the representative of Kuwait Petroleum Corp.

gWe are inviting Novartis to enter negotiations because we believe that such a combination would offer significant advantages for Aventis shareholders and employees as it would create the leading European pharmaceutical company with an attractive portfolio, a strong product pipeline and outstanding R&D capabilities,h Jurgen Dormann and Jean-Rene Fourtou, Chairman and Vice Chairman of the Aventis Supervisory Board, said in a joint statement. gWe are aware of the views of the French and German governments and Aventis will do its best to address them.h

The Supervisory Board also proposed resolutions to be presented to Aventis shareholders for their approval at the next Aventis General Meeting, which is scheduled for May 19, 2004, including a dividend for 2003 of Euro 0.82 per share and the renewal of 10 Supervisory Board member mandates for three years.

Furthermore, a resolution will be proposed to amend the Articles of Association of the company to limit shareholders
L voting rights to a maximum of 15%. Such a limitation, which has been adopted by several other listed companies in France, would prevent shareholders from obtaining control of the company with less than a 50% shareholding. This limitation would not apply if a shareholder obtained 50% or more of the voting rights following a public offer.

The Supervisory Board has also considered how to protect Aventis shareholders against the significant decline in value which would be caused by the potential loss of the Plavix patent. A resolution to issue warrants (Bons de Souscriptions d
fActions) will be proposed to shareholders in order to prevent Sanofi-Synthelabo from shifting their Plavix patent risk to Aventis shareholders.

Under the proposed terms, Aventis shareholders would receive one warrant for each Aventis share, each warrant conferring the right to subscribe to 0.28 new Aventis shares at their nominal value of Euro 3.82 per share in the event that:
the hostile offer of Sanofi-Synthelabo were to succeed against the recommendation of the Supervisory Board of Aventis, and
a generic version of Plavix were launched in the U.S. before the end of 2007.
If all warrants were to be exercised, the resulting new shares would represent about 22% of Aventis
L increased share capital.

While the issuance of such warrants, if approved by Aventis shareholders, would provide protection against the Plavix patent risk, the Aventis Supervisory Board continues to consider the Sanofi-Synthelabo offer inadequate.