UNITED STATES INTERNATIONAL TRADE COMMISSION
`WASHINGTON, DC
`Before the Honorable MaryJoan McNamara
`Administrative Law Judge
`
`
`In the Matter of
`
`CERTAIN WIRELESS FRONT-END
`MODULES AND DEVICES CONTAINING
`THE SAME
`
`
`
`Investigation No. 337-TA-1413
`
`RESPONDENTS KANGXI COMMUNICATION TECHNOLOGIES (SHANGHAI) CO.,
`LTD’S AND GRANT CHIP LABS, INC.’S NOTICE OF PRIOR ART
`
`Pursuant to the Procedural Schedule (Order No. 10) and Ground Rule 4.2 (Order No. 2),
`
`and based on the claims asserted by Complainants Skyworks Solutions, Inc., Skyworks Solutions
`
`Canada, Inc., and Skyworks Global Pte., Ltd. (“Complainants”) per the Notice of Institution,
`
`Respondents Kangxi Communication Technologies (Shanghai) Co., Ltd., and Grand Chip Labs,
`
`Inc. (“Respondents” or “KCT”) respectfully submit their Notice of Prior Art (“Notice”).
`
`KCT may rely on the prior art references identified in Exhibit 1 attached hereto to allege
`
`that the identified claims of U.S. Patent Nos. 8,717,101 (“the ’101 Patent”), 9,148,194 (“the ’194
`
`Patent”), 9,917,563 (“the ‘563 Patent), and 9,450,579 (“the ‘579 Patent”) (collectively “the
`
`Asserted Patents”) are invalid under 35 U.S.C. §§ 102 and/or 103, as anticipatory or as rendering
`
`obvious (alone or in combination), as proof of an invalidating prior use, sale, or offer for sale, or
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`to otherwise invalidate one or more claims of the Asserted Patents.
`
`KCT also includes a separate list of references detailed in Exhibit 2. KCT does not plan
`
`to rely on the references in Exhibit 2 as prior art to allege that the identified claims of the
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`Asserted Patents are invalid under 35 U.S.C. §§ 102 and/or 103, as anticipated or as rendered
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`obvious. However, KCT may rely on the related evidence listed in Exhibit 2 or other references
`
`for other purposes, including for purposes of showing the state of the art during the relevant time
`
`
`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
`
`
`Inv. No. 337-TA-1413
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`

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`periods and the information that would have been known to one of ordinary skill in the art in the
`
`relevant time periods. KCT also may rely upon the persons identified herein as the prior
`
`inventors or as persons having knowledge of or having previously used or offered for sale the
`
`alleged inventions of the Asserted Patents. Names and addresses of Complainants’ employees,
`
`former employees, consultants and/or other persons affiliated with Complainants who may have
`
`knowledge of, or have previously used or offered for sale, the alleged inventions of the Asserted
`
`Patents are within Complainants’ possession, custody or control.
`
`In addition to the references listed in Exhibits 1 and 2, KCT may rely upon information
`
`that is or was: (1) referenced in the Asserted Patents or the prosecution history of the Asserted
`
`Patents; (2) identified or produced by Complainants in this Investigation; (3) identified as a
`
`hearing exhibit by Complainants; (4) contained within any patent or patent prosecution history
`
`that is related to one or more of the Asserted Patents, including foreign counterparts; (5)
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`identified, considered, or relied upon by the inventors of the Asserted Patents, whether or not
`
`cited in any prosecution history; (6) cited in any of the references identified in Exhibit 2, any
`
`related patents, or any patent prosecution history for such patents; (7) cited in any expert report
`
`served during this Investigation; or (8) cited in any other proceeding involving one or more of
`
`the Asserted Patents, including any foreign counterparts. KCT also may rely upon documents
`
`and information for other purposes such as evidence of inherency in any of the prior art
`
`identified, or establishing the prior art as prior art (e.g., documents establishing the sales dates of
`
`prior art products).
`
`This Notice is based on the priority dates as set forth in KCT’s initial invalidity
`
`contentions and the dates claimed in Skyworks’ September 20, 2024 Notice of Patent Priority
`
`Dates/Dates of Conception. If Complainants contend or demonstrate that any of the asserted
`
`2
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`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Inv. No. 337-TA-1413
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`claims are entitled to an earlier priority date, KCT reserves its right to amend this Notice,
`
`including identifying additional prior art references not currently listed in Exhibits 1 and 2. In
`
`the event one or more claims of the Asserted Patents is not entitled to the earliest claimed
`
`priority date, KCT reserves the right to rely on intervening prior art, including other related
`
`patents and published applications, intervening standards, as well as prior art not listed below.
`
`Discovery (including from third parties) in this Investigation is ongoing. Expert reports
`
`have yet to be exchanged, the named inventors of the Asserted Patents have not yet been
`
`deposed, and Complainants have not provided adequate or complete infringement contentions.
`
`KCT, therefore, reserves the right to amend and/or supplement Exhibits 1 and 2 based on
`
`information learned during discovery. KCT also reserves the right to identify additional prior art
`
`that may be rendered material based upon positions Complainants or their expert witnesses may
`
`adopt in this Investigation. Additionally, KCT reserves the right to identify additional prior art
`
`based up on documents produced by Complainants or any third parties in this Investigation.
`
`KCT also reserves the right to amend Exhibits 1 and 2 should it be discovered that a reference
`
`cited during prosecution of an Asserted Patent (or a foreign counterpart or family member of an
`
`asserted patent) was omitted from the following list through inadvertence.
`
`Dated: November 8, 2024
`
`
`
`
`
`
`
`
`Respectfully Submitted,
`
`/s/ Timothy Shannon
`Timothy Shannon
`Seth Coburn
`DUANE MORRIS LLP
`100 High Street, Suite 2400
`Boston, MA 02110
`Telephone: 857.488.4200
`Facsimile: 857.488.4201
`DM_KCT_ITC_1413@duanemorris.com
`trshannon@duanemorris.com
`sscoburn@duanemorris.com
`
`
`3
`
`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Inv. No. 337-TA-1413
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`

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`Brianna Vinci
`Richard Hughes
`DUANE MORRIS LLP
`30 South 17th Street
`Philadelphia, PA 19103
`Telephone: 215.979.1000
`Facsimile: 215.979.1020
`bvinci@duanemorris.com
`rhughes@duanemorris.com
`
`Zheng Li
`DUANE MORRIS & SELVAM LLP
`GuoHua Life Financial Tower, Room 303B
`No. 1501 Century Ave
`Pudong District
`Shangai, China
`Telephone: 86.21.5068.3315
`Facsimile: 86.21.5868.3141
`ZHLi@duanemorrisselvam.com
`
`Barbara A. Murphy
`Matthew Duescher
`FOSTER, MURPHY, ALTMAN, &
`NICKEL, P.C.
`1150 18th Street NW, Suite 775
`Washington, DC 20036
`Telephone: 202.822.4102
`FM-KCT-1413@fostermurphy.com
`
`
`Counsel for Respondents Kangxi Communication
`Technologies (Shanghai) Co., Ltd. And Grand Chip Labs, Inc.
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`4
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`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Inv. No. 337-TA-1413
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`CERTIFICATE OF SERVICE
`
`
`I, David A. Abdow, hereby certify that on November 8, 2024, the foregoing RESPONDENTS
`KANGXI COMMUNICATION TECHNOLOGIES (SHANGHAI) CO., LTD’S AND
`GRANT CHIP LABS, INC.’S NOTICE OF PRIOR ART was served upon the following
`parties as indicated:
`
`
`The Honorable Lisa R. Barton
`Secretary
`U.S. International Trade Commission
`500 E Street, SW
`Washington, DC 20436
`
`The Honorable MaryJoan McNamara
`Administrative Law Judge
`U.S. International Trade Commission
`500 E Street, SW
`Washington, DC 20436
`Email: McNamara337@usitc.gov
`
`Linda Chang, Esq.
`Office of Unfair Import Investigations
`U.S. International Trade Commission
`500 E Street, S.W.
`Washington, DC 20436
`Email: Linda.Chang@usitc.gov
`
`Counsel for Complainants
`Skyworks solutions, Inc., Skyworks Solutions Canada,
`Inc., and Skyworks Global Pte. Ltd.
`WILMER CUTLER PICKERING HALE AND DORR LLP
`James M Dowd (Lead)
`350 s. Grand Ave., Suite 2400
`Loas Angeles, CA 90071
`Email: WHSkyworks-
`KCT1413servicelist@wilmerhale.com
`
`Counsel for
`D-Link Systems Inc. and D-Link Corporation
`Ric Macchiaroli
`Pillsbury Winthrop Shaw Pittman LLP
`7900 Tysons One Place, Suite 500
`Tysons, VA 22102
`DLINK-1413@pillsburylaw.com
`
`
` Via hand delivery
` Via courier (FedEx)
` Via facsimile
` Via first class mail
` Via EDIS
`
` Via hand delivery
` Via courier (FedEx)
` Via facsimile
` Via first class mail
` Via electronic mail
`
` Via hand delivery
` Via courier (FedEx)
` Via facsimile
` Via first class mail
` Via electronic mail
` Via Box
`
` Via hand delivery
` Via courier (FedEx)
` Via facsimile
` Via first class mail
` Via electronic mail
`
` Via hand delivery
` Via courier (FedEx)
` Via facsimile
` Via first class mail
` Via electronic mail
`
`
`
`
`
`
`5
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`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Inv. No. 337-TA-1413
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`

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`Counsel for
`Ruijie Networks Co., Ltd.
`S. Alex Lasher
`Quinn Emanuel Urquhart & Sullivan, LLP
`1300 I Street NW, Suite 900
`Washington, DC 20005
`alexlasher@quinnemanuel.com
`qeruijie@quinnemanuel.com
`
`
`
`
`
`
`
`
`
` Via hand delivery
` Via courier (FedEx)
` Via facsimile
` Via first class mail
` Via electronic mail
`
`
`
`/s/ David A. Abdow
`David A. Abdow
`Duane Morris LLP
`100 High Street
`Boston, MA 02110
`857.488.4232
`
`
`6
`
`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Inv. No. 337-TA-1413
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`EXHIBIT 1
`(PRIOR ART REFERENCES)
`
`
`
`
`
`
`
`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
`
`
`
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`Inv. No. 337-TA-1413
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`

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`Prior Art for the Asserted ’579 and ’194 Patents
`
`Patent or
`Application No.
`(Country)
`
`Named
`Inventors/Authors
`
`Issue or
`Publication
`Date
`
`JP2006121217A
`(Japan)
`
`Toshiki Seshimo,
`et al.
`
`US2011/0254614
`A1 (United
`States)
`
`Chun-Wen Paul
`Huang, et al.
`
`May 11,
`2006
`
`Oct. 20,
`2011
`
`
`
`Anuj Madan, et al. Nov. 2011
`
`Title
`
`Semiconductor Switching Circuit
`
`System and Method of Transistor Switch
`Biasing in a High Power Semiconductor
`Switch
`
`Fully Integrated Switch-LNA Front-End IC
`Design in CMOS: A Systematic Approach
`for WLAN, IEEE Journal of Solid-State
`Circuits, Vol. 46, No. 11
`
`US2010/0327948
`A1 (United
`States)
`
`John Nisbet, et al. Dec. 30,
`2010
`
`Switching Circuit
`
`
`
`
`
`Paul Horowitz, et
`al.
`
`1989
`
`The Art of Electronics
`
`Mannie Horowitz
`
`1986
`
`Electricity, Electronics and
`Electromagnetics Principles and
`Applications
`
`US2012/0081262
`A1 (United
`States)
`
`Satoshi Tanaka, et
`al.
`
`Apr. 5,
`2012
`
`Switch Circuit, Semiconductor Device and
`Portable Wireless Device
`
`
`
`
`
`
`
`Peter J. Mole
`
`2002
`
`Integration of RF Systems on a Chip,
`Chapter 3 of “Circuits and Systems for
`Wireless Communications”, Helfenstein,
`M., Moschytz, G.S. (eds), Springer, Boston,
`MA
`
`Skyworks
`Solutions, Inc.
`
`May 9,
`2011
`
`White Paper - Choosing the Right RF
`Switches for Smart Mobile Device
`Applications
`
`Tero Ranta, et al.
`
`October
`2005
`
`Antenna Switch Linearity Requirements for
`GSM/WCDMA Mobile Phone Front-Ends
`
`#
`
`1
`
`2
`
`3
`
`4
`
`5
`
`6
`
`7
`
`8
`
`9
`
`10
`
`
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`8
`
`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Inv. No. 337-TA-1413
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`

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`Prior Art for the Asserted ’101 & ’563 Patents
`
`#
`
`1
`
`2
`
`3
`
`4
`
`5
`
`6
`
`7
`
`8
`
`9
`
`Patent or
`Application No.
`(Country)
`
`US2005/0140457
`A1 (United
`States)
`
`US2009/0212863
`A1 (United
`States)
`
`Named
`Inventors/Authors
`
`Issue or
`Publication
`Date
`
`Title
`
`John Vincent
`Bellantoni1
`
`Jun. 30,
`2005
`
`Linearized Power Amplifier Modulator in
`an RFID Reader
`
`Yoshiteru Ishimaru Aug. 27,
`2009
`
`Power Amplifier
`
`JP2005027130 A
`(Japan)
`
`Fumimasa
`Morisawa, et al.
`
`Jul. 4, 2003 High-Frequency Power Amplification
`Circuit Bias Control Circuit and High-
`Frequency Power Amplification Electronic
`Component
`
`
`
`
`
`
`
`
`
`
`
`
`
`Linden T. Harrison 2005
`
`Paul R. Gray, et al. 2009
`
`Current Sources and Voltage Reference, A
`Design Reference for Electronics
`Engineers
`
`Analysis and Design of Analog Integrated
`Circuits, 5th Edition
`
`WJ
`Communications,
`Inc.
`
`August
`2004
`
`ECP052 Product Information: 2 Watt High
`Linearity InGaP HBT Amplifier
`
`Jeffrey B. Johnson,
`et al.
`
`Oct. 2004
`
`Motonori Murase,
`et al.
`
`1999
`
`Wim Diels, et al.
`
`Aug. 2001
`
`Silicon-Germanium BiCMOS HBT
`Technology for Wireless Power Amplifier
`Applications, IEEE, Journal of Solid State
`Circuits, Vol. 39, No. 10
`
`Multi-chip Transmitter/Receiver Module
`Using High Dielectric Substrates for 5.8
`GHz ITS Applications, IEEE MTT-S
`Digest
`
`Single-Package Integration of RF Blocks
`for a 5 GHz WLAN Application, IEEE
`Transactions on Advanced Packaging,
`Vol. 24, No. 3
`
`
`
`
`9
`
`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Inv. No. 337-TA-1413
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`

`

`10 US
`2004/0232982 Al
`
`Ikuroh Ichitsubo, et
`al.
`
`2004
`
`RF Front-End Module for Wireless
`Communication Devices
`
`
`
`
`
`
`
`
`
`10
`
`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
`
`
`
`
`Inv. No. 337-TA-1413
`
`

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`
`
`EXHIBIT 2
`(RELATED EVIDENCE, E.G. STATE OF THE ART)
`
`
`
`
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`
`
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`
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`
`
`
`
`
`
`
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`
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`11
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`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Inv. No. 337-TA-1413
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`

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`Related Evidence and State of the Art for the Asserted ‘101 and ‘563 Patents
`
`Title
`
`Analogue IC Design: The current-
`mode approach
`A 24-GHz CMOS Current-Mode
`Power Amplifier, IEEE, 1-4244-
`0921-7/07
`
`A Monolithic SI PCS-CDMA
`Power Amplifier with an
`Impedance-Controllable Biasing
`Scheme, IEEE, 0-7803-6601-8/01
`Feb. 1, 2002 A New High Performance Power
`Amplifier for WCDMA
`Applications is Featured this Month
`Amplitude Modulator in Class E
`with the Current Mirror in Emitter
`Circuits of the Switching
`Transistor, Elec. Energ. Vol. 21,
`no. 2
`An RF Power Amplifier in a Digital
`CMOS Process, Analog Integrated
`Circuits and Signal Processing, 30
`The Alexander Current-Feedback
`Audio Power Amplifier, Analog
`Devices, AN-211
`A Monolithic Power Op Amp,
`IEEE
`Bias Circuits for GaAs HBT Power
`Amplifiers, IEEE, 0-7803-6538-
`0/01
`GaAs HBT Power Amplifier with
`Smooth Gain Control
`Characteristics, IEEE, 0-7803-
`4988-1/98
`Current Mirrors, amplifiers and
`dumpers, Wireless World
`A Novel Continuous-Time Current-
`Mode
`Differentiator and Its Applications,
`IEEE, Vol. 43, No. 1
`A New CMOS Electronically
`Tunable Current
`
`Patent or
`Application No.
`(Country)
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`Issue or
`Named
`Publication
`Inventors/Authors
`Date
`C. Toumazou, et al. 2005
`
`2007
`
`Chung-Yu Wu, et
`al.
`
`Sifen Luo, et al.
`
`RF Micro Devices
`
`Andelija Raicevic
`
`Per Asbeck, et al.
`
`Mark Alexander
`
`2001
`
`Aug. 2008
`
`2002
`
`
`
`Robert J. Widlar, et
`al.
`Esko Jarvinen, et al. Apr. 2001
`
`Apr. 1998
`
`Esko Jarvinen
`
`B. Wilson
`
`Ezz I. El-Masry, et
`al.
`
`Shahram Minaei, et
`al.
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`
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`
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`12
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`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
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`Anh Pham
`
`Roman Sotner, et
`al.
`
`Randy Stephens
`
`May 2002
`
`Apr. 2011
`
`Q3 2004
`
`Joogjin Nam, et al. Apr. 2007
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`Baker Scott, et al.
`
`David Signoff, et
`al.
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`Christophe M. Joly,
`et al.
`Peng Yanjun, et al. May 2009
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`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`
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`Current-Mode Filters, IEEE, Vol.
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`Current Gain Controlled CCTA and
`its Application in Quadrature
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`feedback amplifiers, Analog
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`Jun. 14, 2012 Continuous Cancelation of Gain
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`Inder J. Bahl
`
`Valerie Illingworth
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`Kangxi Communication Technologies (Shanghai) Co., Ltd.’s,
`and Grand Chip Labs, Inc.’s Notice of Prior Art
`
`
`
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`Inv. No. 337-TA-1413
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`

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`
`
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