Diana Weir is a senior associate in the firm’s Litigation, Arbitration and Investigations and Environmental groups.

Diana regularly litigates multi-party contaminated lands lawsuits and, along with others, has litigated ‎such matters to the Ontario Court of Appeal and Supreme Court of Canada.  Her environmental practice ‎involves litigation claims by landlords, tenants, and neighbouring property owners.  She also defends ‎clients charged with environmental and regulatory offences under federal and provincial legislation and ‎advises clients with respect to administrative monetary penalty regimes.  ‎

Diana is responsible for due diligence, coordinating and reviewing environmental site assessments, ‎advising clients on contaminated sites and remediation, and advising on the environmental aspects of ‎leases and agreements of purchase and sale.  Diana is also a key member of the DLA Piper team ‎advising representation and warranty insurers and, as such, participates in many of the major ‎transactions involving Canadian assets.‎

In addition, Diana maintains a broad corporate and commercial litigation practice which includes contractual disputes, ‎product liability, franchising and construction law.
Diana articled at the firm and joined as an associate in 2014.