SAN CARLOS, Calif. (September 21, 2005) – Conceptus, Inc. (Nasdaq: CPTS), developer of the Essure® non-incisional permanent birth control system, today announced that Mark Sieczkarek, president and chief executive officer of Conceptus, will be presenting at the UBS 2005 Global Life Sciences Conference. The presentation will take place on Tuesday, September 27, 2005 at 4:00 pm Eastern Daylight Time (EDT) at the Grand Hyatt New York in New York City.

A link to the live webcast and the recorded webcast will be posted prior to the presentation in the investor relations section of the Company's website at www.conceptus.com. The presentation will be archived for a limited time.

About the Essure Procedure
The Essure procedure deploys a soft micro-insert into the fallopian tube through the cervix using a minimally invasive transcervical tubal access catheter. Once in place, the device is designed to elicit tissue growth in and around the micro-insert to form an occlusion or blockage in the fallopian tube. An Essure procedure does not require cutting or penetrating the abdomen and can be performed in a less costly procedure setting without general anesthesia. A woman is able to return home about 45 minutes after the procedure is completed. There is a three-month waiting period after the procedure during which women must use another form of birth control. The Essure procedure is 99.80% effective after four years of follow-up, and 99.74% effective after five years of follow-up in a small portion of the women undergoing clinical studies. Follow-up of the remaining clinical trial patients is ongoing.

About Conceptus Incorporated
Conceptus, Inc. manufactures and markets the Essure Permanent Birth Control system, an innovative medical device and procedure designed to provide a non-incisional alternative to tubal ligation, which is currently the leading form of birth control worldwide. The availability of the Essure procedure in the U.S. is expected to open up a market currently occupied by incisional tubal ligation and vasectomy, which combined account for over 1 million procedures annually.

Additional information about the Essure procedure is available at www.essure.com or by calling the Essure Information Center at 1-877-ESSURE1. Additional information about Conceptus is available at www.conceptus.com or by calling 1-877-ESSURE2.