EXHIBIT 99.4 WARNER-LAMBERT PLEASED WITH DELAWARE COURT OF CHANCERY DECISION TO EXPEDITE HEARING MORRIS PLAINS, N.J. -- Nov. 19, 1999 -- Warner-Lambert Company said today it was pleased with the decision of the Delaware Court of Chancery to schedule a January 24, 2000 hearing of Pfizer Inc's lawsuit challenging certain provisions of the Company's merger agreement with American Home Products. The Courts' decision to expedite the legal process follows Warner-Lambert's November 9, 1999 request of Pfizer to commit to move the proceeding along as promptly as possible in order to resolve the uncertainty that Pfizer's litigation has created. Contact: Warner-Lambert Company Media: Carol Goodrich (973) 540-3620 or Investor Relations: George Shields (973) 540-6916 John Howarth (973) 540-4874