May 10, 2011
Mitsubishi Tanabe Pharma Corporation

Partial Amendment of the Articles of Incorporation
Osaka, Japan, May 10, 2011 ---- Mitsubishi Tanabe Pharma Corporation announces that at themeeting of its Board of Directors held on May 10, 2011, the Company has resolved to submit “partialamendments to its Articles of Incorporation” as an agenda item of the proceedings of the Fourth
Ordinary General Shareholders’ Meeting scheduled to be held on June 22, 2011, as described below.

1. Reasons for Amendment
The Company shall establish new provisions that allow it to partially exempt Directors andCorporate Auditors from their liabilities by resolution of the Board of Directors, and thatallow it to enter into a limitation of liability agreement with any Outside Directors andOutside Corporate Auditors, so that all Directors and Corporate Auditors may fully play theiranticipated roles. (Proposed amendments of Article 27: Exemption of Directors fromLiabilities, and Article 35: Exemption of Corporate Auditors from Liabilities)
2. Details of Amendment
Details of the proposed amendments are indicated in the attachment.
3. Schedule
Date of Ordinary General Shareholders’ Meeting foramendment of the Articles of Incorporation:

June 22, 2011 (planned)

Effective Date of Amended Articles of Incorporation:

June 22, 2011 (planned)<Media enquiry>
Corporate Communications Department
Phone: +81 6-6205-5211

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[Attachment](Underlined texts indicate amendments.)
Proposed Amendment
Article 1 to Article 26 (No amendment)

Current Articles of Incorporation
Article 1 to Article 26 (Related provisions omitted.）(Newly established)

Article 27 (Exemption of Directors from Liabilities)
Pursuant to Article 426, paragraph 1 of theCompanies Act of Japan, the Company may, byresolution of the Board of Directors, exemptDirectors (including former Directors) fromliabilities provided for in Article 423, paragraph 1 ofthe Companies Act within the limits stipulated bylaws and regulations.
2. Pursuant to Article 427, paragraph 1 of theCompanies Act, the Company may enter into alimitation of liability agreement with any Outside
Directors, which shall limit the maximum amount of
their liabilities provided for in Article 423,
paragraph 1 of the Companies Act to the higher of
either a predetermined amount or the minimum
amount of liabilities stipulated by laws andregulations.

Article 27 to Article 33 (Related provisions omitted.)

Article 28 to Article 34 (No amendment)(Newly established)

Article 35 (Exemption of Corporate Auditors fromLiabilities)
Pursuant to Article 426, paragraph 1 of theCompanies Act of Japan, the Company may, byresolution of the Board of Directors, exempt
Corporate Auditors (including former CorporateAuditors) from liabilities provided for in Article
423, paragraph 1 of the Companies Act within thelimits stipulated by laws and regulations.
2. Pursuant to Article 427, paragraph 1 of theCompanies Act, the Company may enter into alimitation of liability agreement with any Outside
Corporate Auditors, which shall limit the maximum
amount of their liabilities provided for in Article
423, paragraph 1 of the Companies Act to the higherof either a predetermined amount or the minimum
amount of liabilities stipulated by laws andregulations.

Article 34 to Article 37 (Related provisions omitted)

Article 36 to Article 39 (No amendment)2