One of two in-house counsel on chronically under-resourced and underappreciated legal team for a global high-tech company.

One of two in-house counsel on chronically under-resourced and underappreciated legal team for a global high-tech company. We have about 1400 employees. It is a nightmare and I have resolved to leave. However, I've been looking for a new position for two years. Have had some interviews but a lot less interest than I expected with 20 years of IP experience (firm and in-house), a professionally drafted resume (x2), broad technical background, plus I really love the work. I have reached out to my network, used cover letters, used metrics and action words, and tailored resumes to job desriptions. I have not tried to hide my age (51), although, I keep my background to relevant details. My educational background may be part of the problem, just state school and third tier law school. Any thoughts on how to get more traction with employers? I am sort of losing my cheery perspective.