JOINT FILING AGREEMENT
Exhibit 1
In accordance with Rule 13d-1(f) of the Securities Exchange Act of 1934, as amended, the
undersigned agree that this Statement on Schedule 13D being filed on or about this date, and any
subsequent amendments thereto filed by any of us, with respect to the Ordinary Shares of Schering
AG, a German stock corporation, is being filed on behalf of each of us. This Agreement may be
included as an exhibit to such joint filing.
DATED: March 20, 2006
| MERCK KGaA |
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| By: | /s/ Xx. Xxxxxx Xxxxxxx-Xxxxxx | |||
| Name: | Xx. Xxxxxx Xxxxxxx-Xxxxxx | |||
| Title: | General Counsel | |||
| E. MERCK OHG |
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| By: | /s/ Xx. Xxxxxx Xxxxxxx-Xxxxxx | |||
| Name: | Xx. Xxxxxx Xxxxxxx-Xxxxxx | |||
| Title: | General Counsel | |||
