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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Branch (PTMB)

Patenting In Technology Classes,
Breakout By Organization

Count of 2001 - 2005 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of Organizations Receiving 5 or More Utility Patents During the Period
Having Primary Classification In

Class 379, Telephonic Communications

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent ownership is determined by the first-named assignee listed on a patent )

The following table displays first-named assignees and counts of their associated patents, as distributed by the year of patent grant
First-Named Assignee 2001 2002 2003 2004 2005 Total
~Individually Owned Patent 72 56 73 72 59 332
AT&T CORP. 66 66 29 43 23 227
BELLSOUTH INTELLECTUAL PROPERTY CORPORATION 11 15 33 75 71 205
LUCENT TECHNOLOGIES INC. 64 42 39 40 17 202
NORTEL NETWORKS LIMITED 44 31 41 43 23 182
AVAYA TECHNOLOGY CORP. 25 27 30 33 16 131
INTERNATIONAL BUSINESS MACHINES CORPORATION 17 14 22 40 30 123
TELEFONAKTIEBOLAGET LM ERICSSON 21 20 23 25 9 98
SIEMENS AKTIENGESELLSCHAFT 10 21 19 24 23 97
ALCATEL 15 13 22 25 17 92
CISCO TECHNOLOGY, INC. 6 7 16 27 30 86
NEC CORPORATION 18 18 16 21 12 85
FUJITSU LIMITED 25 11 14 19 10 79
SBC PROPERTIES, L.P. 0 0 10 31 30 71
AMERITECH CORPORATION 16 32 20 0 1 69
SIEMENS INFORMATION AND COMMUNICATIONS NETWORKS, INC. 14 16 12 25 2 69
SAMSUNG ELECTRONICS CO., LTD. 10 16 10 10 14 60
SPRINT COMMUNICATIONS COMPANY L.P. 4 9 11 21 12 57
3COM CORPORATION 8 13 12 18 5 56
AGERE SYSTEMS INC. 0 2 21 23 10 56
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. 8 10 12 15 10 55
INTEL CORPORATION 3 4 10 12 20 49
SBC TECHNOLOGY RESOURCES, INC. 6 5 9 21 7 48
BRITISH TELECOMMUNICATION, PLC 15 10 9 6 6 46
NOKIA CORPORATION 0 1 14 20 11 46
MCI COMMUNICATIONS CORP. 15 20 4 4 2 45
CONEXANT SYSTEMS, INC. 4 13 9 13 2 41
QWEST COMMUNICATIONS INTERNATIONAL INC. 8 7 10 11 4 40
WORLDCOM, INC. 0 14 17 9 0 40
MOTOROLA, INC. 1 12 8 10 5 36
ALCATEL USA SOURCING, L.P. 18 10 6 0 1 35
VERIZON SERVICES CORP. 0 6 4 17 7 34
GENESYS TELECOMMUNICATIONS LABORATORIES, INC. 13 11 4 5 0 33
ERICSSON, INC. 11 9 7 4 0 31
LEGERITY, INC. 5 4 7 7 7 30
NOKIA MOBILE PHONES LTD. 8 3 9 8 2 30
NOKIA NETWORKS OY 6 12 3 4 5 30
SILICON LABORATORIES INC. 5 5 4 4 9 27
TOSHIBA CORPORATION 5 7 4 7 3 26
CANON KABUSHIKI KAISHA 4 7 4 6 4 25
AGERE SYSTEMS GUARDIAN CORP. 7 16 1 0 0 24
OKI ELECTRIC INDUSTRY CO., LTD. 3 2 4 7 8 24
BELL ATLANTIC NETWORK SERVICES, INC. 16 5 0 2 0 23
MITEL CORPORATION 3 5 8 7 0 23
INFINEON TECHNOLOGIES AG 0 0 5 4 13 22
MICROSOFT CORPORATION 1 7 3 4 6 21
PARADYNE CORPORATION 5 2 5 7 2 21
MCI, INC. 0 0 0 9 10 19
MICROSTRATEGY, INC. 1 1 2 8 7 19
TEXAS INSTRUMENTS, INCORPORATED 4 1 2 3 9 19
ADTRAN 2 0 8 4 4 18
LG ELECTRONICS INC. 0 0 3 5 10 18
HARRIS CORP. 11 3 1 2 0 17
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. 0 0 3 8 6 17
KONINKLIJKE PHILIPS ELECTRONICS N.V. 0 2 5 7 2 16
SONY CORPORATION 2 3 6 2 3 16
ADVANCED MICRO DEVICES, INC. 6 4 1 3 1 15
HITACHI, LTD 2 4 4 3 2 15
VERIZON CORPORATE SERVICES GROUP INC. 0 1 2 3 9 15
VERIZON LABORATORIES INC. 1 4 3 4 3 15
ROCKWELL ELECTRONIC COMMERCE CORP. 2 3 5 2 2 14
ROCKWELL ELECTRONIC COMMERCE TECHNOLOGIES LLC 0 0 2 2 10 14
SHARP KABUSHIKI KAISHA (SHARP CORPORATION) 4 6 3 0 1 14
TELLABS OPERATIONS INC. 5 1 6 1 1 14
THOMSON LICENSING S.A. 2 3 4 1 4 14
UNISYS CORPORATION 4 3 4 3 0 14
WALKER DIGITAL, LLC 8 2 2 2 0 14
METRO ONE TELECOMMUNICATIONS, INC. 0 2 1 3 7 13
HEWLETT-PACKARD COMPANY 4 5 3 0 0 12
NOKIA TELECOMMUNICATIONS OY 5 5 2 0 0 12
TEKELEC 1 0 3 2 6 12
TELTRONICS, INC. 1 0 9 2 0 12
ADC TELECOMMUNICATIONS, INC. 0 1 0 9 1 11
ASPECT COMMUNICATIONS CORP. 1 3 1 4 2 11
CONCERTO SOFTWARE, INC. 0 1 2 8 0 11
DEUTSCHE TELEKOM AG 1 2 7 1 0 11
MCI WORLDCOM, INC. 3 6 2 0 0 11
MITSUBISHI DENKI KABUSHIKI KAISHA 2 2 3 3 1 11
QUALCOMM, INC. 4 3 1 3 0 11
SPRINT SPECTRUM L.P. 0 0 3 3 5 11
ATT WIRELESS SERVICES INC 1 3 4 2 0 10
BROADCOM CORPORATION 0 1 0 4 5 10
INTERVOICE LIMITED PARTNERSHIP 2 2 1 2 3 10
MITEL KNOWLEDGE CORPORATION 0 3 1 6 0 10
SECURELOGIX CORPORATION 3 0 0 6 1 10
T-NETIX, INC. 0 1 6 1 2 10
TELCORDIA TECHNOLOGIES, INC. 3 0 1 3 3 10
TERADYNE, INC. 0 3 1 3 3 10
TURNSTONE SYSTEMS, INC. 1 3 5 1 0 10
ULTRATEC, INC. 2 1 5 0 2 10
HITACHI TELECOM TECHNOLOGIES, LTD. 1 3 2 3 0 9
RONALD A. KATZ TECHNOLOGY LICENSING L.P. 1 5 2 1 0 9
SANYO ELECTRIC CO., LTD. 1 2 3 2 1 9
BELL CANADA 1 2 1 2 2 8
CENTILLIUM COMMUNICATIONS, INC. 1 0 1 4 2 8
CONVERGYS CMG UTAH INC. 3 2 1 1 1 8
INTERSIL CORPORATION, INC. 1 1 2 2 2 8
KONINKLIJKE KPN N.V. 0 2 3 1 2 8
NEC AMERICA, INC. 0 4 3 1 0 8
SIEMENS COMMUNICATIONS, INC. 0 0 0 0 8 8
AMERICA ONLINE, INC. 0 0 4 2 1 7
BROTHER KOGYO KABUSHIKI KAISHA 3 2 1 0 1 7
COMVERSE, LTD. 0 0 1 5 1 7
DAVOX CORPORATION 3 4 0 0 0 7
FRANCE TELECOM 1 2 1 2 1 7
GENERAL ELECTRIC COMPANY 0 2 1 4 0 7
MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC. 1 4 2 0 0 7
NEC INFRONTIA CORPORATION 0 2 2 2 1 7
WINBOND ELECTRONICS CORP. 2 1 3 1 0 7
ZARLINK SEMICONDUCTOR INC. 0 0 4 2 1 7
CONVERGYS CUSTOMER MANAGEMENT GROUP INC. 0 0 2 2 2 6
DICTAPHONE CORPORATION 0 0 0 4 2 6
ECI TELECOM LTD. 0 1 2 3 0 6
INLINE CONNECTION CORPORATION 4 0 1 0 1 6
INTERACTIVE INTELLIGENCE, INC. 0 1 1 2 2 6
MUREX SECURITIES, LTD. 1 2 3 0 0 6
NMS COMMUNICATIONS CORPORATION 0 1 0 3 2 6
SNIP, INC. 1 2 2 0 1 6
SUN MICROSYSTEMS, INC. 2 2 0 1 1 6
TOLLGRADE COMMUNICATIONS, INC. 2 1 3 0 0 6
WESTELL TECHNOLOGIES, INC. 4 1 0 1 0 6
2WIRE, INC. 1 0 0 3 1 5
A G COMMUNICATION SYSTEMS CORPORATION 1 2 0 2 0 5
ACOUSTIC TECHNOLOGIES, INC. 0 1 1 2 1 5
ADC DSL SYSTEMS, INC. 0 0 1 1 3 5
ALTIGEN COMMUNICATIONS, INC. 1 1 0 2 1 5
AMERITECH SERVICES, INC. 2 1 0 1 1 5
CHARLES INDUSTRIES, LTD. 0 3 1 1 0 5
CISCO SYSTEMS, INC. 0 2 2 0 1 5
COMVERSE, INC. 0 0 1 4 0 5
CORNING CABLE SYSTEMS LLC 0 1 1 1 2 5
DENSO CORPORATION 0 3 1 0 1 5
INET TECHNOLOGIES, INC. 1 2 2 0 0 5
MINDSPEED TECHNOLOGIES, INC. 0 0 0 4 1 5
NATIONAL SEMICONDUCTOR CORPORATION 0 1 0 1 3 5
NCR CORPORATION 3 2 0 0 0 5
PITNEY-BOWES, INC. 0 2 1 2 0 5
PLANTRONICS INC 0 0 1 4 0 5
RICOH COMPANY, LTD. 0 2 0 1 2 5
ROCKWELL INTERNATIONAL CORPORATION 4 0 1 0 0 5
SER SOLUTIONS, INC. 5 0 0 0 0 5
STMICROELECTRONICS S.A. 0 2 0 1 2 5
STMICROELECTRONICS S.R.L. 0 0 1 2 2 5
WEST CORPORATION 0 0 0 2 3 5


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Questions regarding these reports should be directed to:

U.S. Patent and Trademark Office
Electronic Information Products Division - PTMB
MDW 4C18; P.O Box 1450
Alexandria VA 22313-1450

tel: (571) 272-5600
fax: (571) 273-0110
email: oeip@uspto.gov

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