What does the cryptic crossword clue "Licences, including one for those not well treated (8)" mean?

The wordplay uses a container (one word inside another). I (synonym="one") in PATENTS (synonym="licences") = PATIENTS The answer is PATIENTS.

Licences, including one for those not well treated (8)

Guardian Cryptic #29347 | 10 Across | 2024-04-03 flower