Sun Microsystems Inc is alleging that some of Princeton, New Jersey-based Dataram Corp’s memory boards violate five patents issued to Sun. Dataram says it will file counterclaims seeking appropriate redress from Sun for its current program of marketing through product disparagement, its abusive misuse of its patent portfolio and its interference with Dataram’s existing and potential customer relationships. It also asserts that three of the five patents alluded to by Sun do not even involve Dataram memory products. Sun is well aware that these patents are useless in the production of quality memory boards, it says, adding that the remaining two patents are invalid as they merely restate prior art in the field, including Dataram’s own prior art; it believes the boards do not infringe any valid patent.