No, the headquarters are in San Jose

Look at a the past few NRs, its starts with: SAN JOSE, CA, (MARKETWIRED, March 22, 2016) – POET Technologies Inc. (the “Company” or “POET”) (OTCQX: POETF; TSX Venture: PTK),

It was also stated that they have already moved to San Jose and the T.O. office is still operational

here http://www.poet-technologies.com/poet-technologies-reports-on-plan-milestones-in-its-lab-to-fab-initiative-product-prototypes-and-initial-market-entry-targeted-for-2016/:

• POET has completed – nearly a full quarter ahead of plan – the consolidation of its Toronto-Connecticut-San Jose operations in Silicon Valley."