According to https://www.gov.uk/paternity-pay-leave/eligibility, one can take paternity leave if he has completed 26 weeks with current employer.

Clause’s state:

The employee must have been continuously employed (as an employee, not as a 'worker' or self-employed contractor) for a period of at least 26 weeks up to any day in the ‘qualifying week’, which is the 15th week before the expected week of childbirth (in adoption cases, at least 26 weeks ending with the week the adopter is notified of a match).

Can you kindly Advise, as our new employee is on probation as joined us on 9 May 2022, he is expecting to take paternity leaves in mid July.