Struggling to turn “surprising data” into persuasive patent language that stands up in US and EP prosecution? This lesson gives you a repeatable, attorney‑vetted method to frame unexpected results using Context → Contrast → Causation, backed by disciplined evidence, calibrated hedging, and clear causal links. You’ll see concise explanations, real‑world model sentences, and targeted exercises (MCQs, fill‑in‑the‑blank, error correction) so you can write claims and responses that signal non‑obviousness without hype. Finish with a toolbox you can apply immediately—precise, defensible English that converts experiments into strategic advantage.