Use the adhesive Evra, is it even effective?

My pill is the "evra" sticker, my boyfriend wants to have intercourse without a condom and I'm afraid the patch is not as effective as the normal pill to fight against pregnancy. Is it so effective or not? Can I rest easy?
Expert answer:

Yes it is effective, no company could sell a contraceptive if it was not effective and no doctor would prescribe if it was not effective.