Xperi has won its battle against activist investor Rubric Capital, after stockholders voted to reelect all five of the entertainment software firm’s directors – but the war is not over. The extraordinary lengths that Xperi went to in order to derail the attempted coup—including a 104-page deck and personal character attacks—show just how much faith the company’s current board has in the strategic roadmap. However, if revenues continue their downward trend, and if the business does not reach its long-term EBITDA margin targets of between 25% to 30%, then either Rubric Capital or another of Xperi’s investors will be back. While the investor drama was boiling over, a product announcement from Xperi subsidiary TiVo was sizzling away subtly. This came…