FWIW, these drugs are in two different classes and yours is not considered inferior. It too has kidney-protective effects. It's also in a drug class (ACE-inhibitors) that is first-line treatment for heart failure patients and reduces all-cause mortality in this group. While telmisartan and those in its class (ARB) may also do this, currently the clinical evidence just isn't there (yet).
Also, you would not want to run both of these drugs at the same time. If another blood pressure medication was required, typically something out of the calcium channel blocker class, such as amlodipine, is added.
The benefits, if any, that you'd see from switching medications from lisinopril to telmisartan would likely be negligible.
BONUS CONTENT: For those reading this--if you're African-American, disregard this information. You'd want to be on either diuretics or a calcium channel blocker. You can google treatment recommendations and why if you'd like to know more (physiological differences).