Masons had triumphed in a beauty parade against Jones Day Gouldens to advise IP2IPO Group on its own initial public offering (IPO) last week.
Masons, which is re-nowned more for its construction practice than its corporate finance capability, is the unlikely beneficiary of a renewed appetite for technology stocks in London.
The offering comes in the same week as Wolfson Microelectronics' flotation on the main market.
The firm's head of corporate and commercial Russell Booker advised IP2IPO on its £30m offering on AIM at the London Stock Exchange, which gives the company a market capitalisation of £111m.
IP2IPO has been spun out of investment bank and retail fund management business The Evolution Group, which inherited IP2IPO when it acquired long-term Masons client Beeson Gregory Group for £92m last year.
Jones Day Gouldens advised Evolution Group on the merger, but has lost out this time round.
IP2IPO forms partnerships with universities with a view to exploiting their intellectual property rights and supporting the scientists as they form companies.
Nabarro Nathanson partner Peter Williamson advised long-term client and nominated adviser and broker KBC Peel Hunt.