It's a bit tricky because "born" is already the past participle. It doesn't change form in the past participle.
Here are some examples:
* He was born in 1990. (past participle used as part of the passive voice)
* She has been born and raised in this town. (past participle used in the present perfect tense)
* They were born into a wealthy family. (past participle used in the past tense)