Boston University (BU) is seeking sales bans on a variety of products sold by Apple, Amazon, and Samsung, claiming the companies infringe on a semiconductor patent one of its professors filed for in 1995. The latest suit, filed against Apple yesterday in US District Court in Massachusetts (PDF), names the iPhone 5, iPad, and MacBook Air as products that Apple should be “permanently enjoin[ed]” from making or selling. BU also seeks financial damages. A nearly identical case was filed against Amazon two months ago (PDF), seeking bans on the Kindle Paperwhite e-reader and the entry-level Kindle Fire tablet. A suit against Samsung filed in March (PDF) accuses that company of infringing BU intellectual property by selling products containing a specific LED part (the products are not named in the complaint).