RNS Number:1525S
Wolfson Microelectronics PLC
17 November 2003

Update on legal action with Cirrus Logic Inc

In our prospectus dated 16th October 2003, we referred to the filing by Cirrus
Logic Inc. ("Cirrus") of a patent infringement suit in the US District Court for
the Southern District of California and the filing of a separate complaint with
the US International Trade Commission ("ITC").

Wolfson Microelectronics plc and Wolfson Microelectronics Inc. ("Wolfson") have
received notification from the ITC that it will undertake an investigation into
the allegations by Cirrus of infringement of US Patent No. 6,492,928, a patent
that Cirrus named in the District Court case.  The ITC routinely investigates
complaints of alleged infringement it receives, so Wolfson anticipated the ITC's
action to initiate the investigation.

The ITC's decision to undertake this investigation in no way alters Wolfson's
belief that Cirrus' allegations do not have merit and Wolfson will pursue a
vigorous defense against Cirrus' claims in this and any other action. Wolfson
has notified Cirrus that it does not violate this patent and has provided Cirrus
with information that questions the appropriateness of asserting this patent
against Wolfson or anyone else.

The ITC investigation process is expected to last at least twelve months.

Enquiries

Wolfson                                                           0131 272 7000

David Milne, CEO
George Elliott, CFO

Brunswick                                                         020 7404 5959

Tom Buchanan
Harry Chathli




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