February 9, 2009 / 10:33 PM / in 9 years

UPDATE 1-Delaware judge issues final Rambus ruling

WASHINGTON, Feb 9 (Reuters) - Chip designer Rambus (RMBS.O) is barred from enforcing 12 patents involved in a legal fight with Micron Technology MU.N, a judge said in a U.S. district court in Delaware.

Judge Sue Robinson of the U.S. District Court for the District of Delaware entered a final judgment on Monday against Rambus and in favor of memory chip maker Micron, which had accused Rambus of spoiling evidence in the case.

Rambus was not immediately available for a comment.

Rambus asserts that a number of memory chip makers infringe on its patents for improving dynamic random access memory (DRAM), which is used in computers and other electronics.

The company has legal battles pending with Hynix Semiconductor (000660.KS), Nanya and Samsung (005930.KS).

Rambus’s technology has been successful in part because it was adopted as part of an open standard by an industry group and incorporated widely, including by Intel (INTC.O).

Government agencies and others have said that Rambus unfairly tried to collect excessive royalties on patents that covered technologies in that standard.

The Federal Trade Commission ruled against Rambus on the issue, but was overturned in court. It has asked the Supreme Court to hear the case. A separate investigation is pending in Brussels before the European Commission.

The ruling on Friday was separate from the standards issue, except that both questioned the company’s integrity.

Reporting by Diane Bartz; Editing by Bernard Orr

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