While you're right about Sauron being the Lord of the Rings, he didn't make all of them.
The three Elven rings were made in secret by Elves, and were untainted by Sauron. Disregard the TV show, which shows a version contradicting Tolkien.
This is the reason at the end of the Return of the King, with Sauron defeated, Gandalf, Galadriel and (Cirdan?) are able to openly wear the three again. Had they been tools of the Enemy, they would never have been worn again.
The three Elven rings were made in secret by Elves, and were untainted by Sauron. Disregard the TV show, which shows a version contradicting Tolkien.
This is the reason at the end of the Return of the King, with Sauron defeated, Gandalf, Galadriel and (Cirdan?) are able to openly wear the three again. Had they been tools of the Enemy, they would never have been worn again.