Due diligence is important before in-licensing technology from third parties. Key aspects to evaluate include the technology's legal status, ownership, licensing history, strength and ability to withstand challenges. The six main steps of due diligence are: assessing difficulty to invalidate the intellectual property, analyzing timelines and jurisdictions, determining the technology's current phase, evaluating infringement risks, and properly valuing the patent. Careful due diligence helps identify the right technology to license and mitigate risks like invalid intellectual property or inability to commercialize.