Oracle has accused HP of secretly paying Intel to keep producing Itanium chips so that the market is fooled into thinking the "dead microprocessor is still alive".
Oracle made the accusation in a filing to the US courts last week, noting that HP had admitted to the courts to a "contractual commitment" with Intel to continue the production of Itanium through the next two generations of microprocessors.
"At the heart of this is something that – at great effort – HP has kept secret from the marketplace," said the Oracle filing.
"The market has never been told that Itanium lives on only because HP is paying Intel to keep it going."
Oracle argued that if it had not been for the secret contract, Intel's "independent business judgment" would have killed off Itanium years ago.
"HP has secretly contracted with Intel to keep churning out Itaniums so that HP can maintain the appearance that a dead microprocessor is still alive," the filing continued.
Oracle and HP have been involved in a legal battle over the Itanium chip since June this year when Oracle announced it was ending support for its database software on Itanium.
As a result, HP issued a lawsuit against Oracle, arguing the decision had been made in an attempt to kill off competition to Oracle's Sun servers.
In a statement, HP dismissed Oracle's claim regarding a secret pact with Intel, calling the accusations "false" and a tactic to delay the trial, which the court has set for 27 February 2012.
"It is time for Oracle to quit pursuing baseless accusations and honour its commitments to HP and to our shared customers in a timely manner," the statement added.
Oracle has called the Itanium lawsuit a "publicity stunt" and a ploy by HP to escape blame from customers for selling outdated systems.
HP and Intel have jointly developed the Itanium chip since 2001.
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