Robinson is very much alive. In fact, he was a guest of honor at this summer's Comic-Con International, and he won the Bob Clampett Humanitarian Award. Here is the bio that ran in the Comic-Con program book:

Jerry Robinson began his cartooning career at age 17 as an assistant to Bob Kane, who had just created the Batman character for Detective Comics. Jerry was in on many ďfirstsĒ for Batman and is credited with creating the Joker and for naming Robin, the Boy Wonder. After working for Kane for about a year, Robinson went on to work directly for DC/National, penciling and inking Batman stories and covers. Later in the 1940s Robinson teamed up with Mort Meskin to produce Johnny Quick and the Vigilante for DC and stories for Standardís Fighting Yank and Black Terror titles.
Robinson left comic books for the comic strip world, and in 1953 his first strip, Jett Scott, appeared. Since then he has produced a wide variety of syndicated cartoons, and today his award-winning feature of social/political satire Life With Robinson is internationally syndicated.
Among Robinsonís 30 books is The Comics: An Illustrated History, acclaimed as the definite study of the genre; Skippy and Percy Crosby; and The 1970s Best Political Cartoons of the Decade. This last book served as the genesis for Robinsonís Cartoonists & Writers Syndicate (CWS), which syndicates and exhibits the work of 350 leading cartoonists and graphic artists from over 50 countries.
Robinson has served as president of both the Association of American Editorial Cartoonists and the National Cartoonists Society and is a member of the board of trustees of the International Museum of Cartoon Art (IMCA) in Boca Raton, Florida, for which he also serves as chair of the international advisory board. He has curated exhibitions in the U.S. and abroad, and has traveled the world extensively on behalf of CWS, serving on international juries and acquiring works of major creators for the IMCA.
Robinson has played a major role in court cases involving creator rights, including copyright, trademark, censorship/first amendment, and human rights issues. Among these efforts, he represented Siegel and Shuster in their efforts to obtain financial security and creator credits for Superman, obtained the release of jailed and tortured cartoonists in Uruguay and the Soviet Union, and served on the joint arts committee that negotiated creator protection in the renewal of the copyright law.