Even as Teladoc and American Well fight out their legal battle over patents, the two companies continue to duke it out in the marketplace as well, as does another challenger, Doctor on Demand. On Friday a Deutsche Bank analyst broke the news in a research note that Highmark, a health insurer in Western Pennsylvania, chose not renew contracts that represented $1.5 million in annual revenue for Teladoc, or 3.6 percent of Teladoc’s projected 2016 membership, according to the Wall Street Journal.