Patterson (PDCO) said late Tuesday that the 40-day "go-shop" period under the terms of its go-private deal with health care investment firm Patient Square Capital has expired.

The dental and animal health distributor said it did not receive any alternative acquisition proposals from any third party during the period.

Patient Square recently agreed to acquire Patterson for $31.35 per share in an all-cash deal valued at roughly $4.1 billion. That deal is expected to close in April, subject to approval by Patterson shareholders and US antitrust clearance, the company said.