Free Opening Brief in Support - District Court of Delaware - Delaware

Case 1:04-cv-00852-SLR Document 34-5 Filed 04/13/2005 Page 1 012

Case 1 :04-cv—OO852-SLR Document 34-5 Filed 04/13/2005 Page 2 of 2
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Sumitomo Mitsubishi Silicon Corporation
Attention to Nix Katsuichi Gunji
General Manager
Engineering planning Dpi
314 Nishisangao, Nada-shi,
Chiba, 2.7S··0O15
Japan
Wednesday, 23 March 2005
_ Dear Mr Gunji,
This is a reply tc: ynur facsimile dated March 22, 2005.
We have indeed xeaeived at letter Hom MEMC, signed by Dr. Shaker Sadasivem, senior Vice
presidcnp Research Sa Development, ill the context cnf other confidential exchanges. A copy Of the
relevant passage 01 this Icttar is provided to you below for your complete information :
‘*Re1z1ted1y, we met.: &0m your website that your "(JNIBOND product is described as
ccutainiug COI’—£n::e material (active and handle wafers). W4: als;) undcrsmml that you
supply SOI wafers ru certain customers whose specifications require :1 COP·f1·ee device
layer. MEMC has sn extensive param. csmv: concerning COP—free silicon iugcts and
wafers {ic,. agglcr xermeci imuiusic pcim defecwiree m11tcria}),per se, methods of
preparing such ixsgeas md wafers. and SOI substrates prepared hom such materials. See,
for example our UH Patent Nos- 5,919,302; 6,236,104; 6,254,672; 6,287,380; and 6,342,725 and
European Patent Nos. 972,094; 973,963; and 973,964. We arc interested
in obtaining furthe: · information concerning your UNIBOND product and whether, fO1'
example, you beiie rc your UNIBOND product and its prcparatiou fall Outside Ehr: scope
of our patent estate amd, if sc, why."
We believe we hav to reply LO MEMO wimin the next mouth and would appreciate your
comments before that aime. In psrticuizu, we wcmid appreciate your comments in relation to the
European patents c that were cimd iu our previous letter.
Yours truly,
_ E1:¤mau1ue1Huyghe
J} industrial Progeny Manager
Tel : +33 4 76 92 75 83
Fax:-1-33 4 76 92 76 60
S.O.l.`2'EC — Parc Technclcgique das Fonteines - 38190 BERNIN ·· FRANCE
Adresse postele . 38926 CROLLES Cedex — Tei :33 (4} 75 92 75 OU —- Fax :33 (4) 76 92 75 O1
Adresse Internet 2 www.s0itsc.00m
SA au capita.! de 4 319 518, 55 € — 334 711 909 RCS de Grenoble — Code APE 321 C
ZOO DELLIDS ’ DQQLZBQLFU X'?.-{ 9(HQT 90. 90/CZ