Commercial and shareholder litigation involves legal disputes arising within business contexts, particularly focusing on disagreements among shareholders or between a company and its shareholders, often stemming from issues like oppression, breach of fiduciary duty, or financial irregularities. While alternative dispute resolution methods like mediation and negotiation are often preferred, litigation can become necessary when these fail, with remedies available under corporate law statutes, such as the oppression remedy in Ontario’s Business Corporations Act (OBCA).