The Harrity Analytics Team compiled a list of the top patent law firms that are ranked based on the total number of U.S. utility patents that issued in 2021 where the patent firms were listed on the front of the utility patents, and the art unit is in technology center 2800. Only patent firms that have obtained at least 50 utility patents are included. An attempt was made to correct for typographical errors. Company legal departments were not eliminated from the list.
| Rank - Overall | Law Firm Name | 2021 Patents | 2020 Patents | YoY Difference |
|---|---|---|---|---|
| 1 | OBLON MCCLELLAND MAIER & NEUSTADT L.L.P. | 1353 | 1667 | -19% |
| 2 | JCIPRNET | 1149 | 1104 | 4% |
| 3 | SUGHRUE MION PLC | 1136 | 1192 | -5% |
| 4 | HARNESS IP | 981 | 1115 | -12% |
| 5 | SLATER MATSIL | 969 | 970 | -0% |
| 6 | OLIFF PLC | 946 | 1092 | -13% |
| 7 | CANTOR COLBURN LLP | 904 | 1061 | -15% |
| 8 | BIRCH STEWART KOLACH & BIRCH LLP | 861 | 869 | -1% |
| 9 | MUNCY GEISSLER OLDS & LOWE P.C. | 811 | 912 | -11% |
| 10 | FOLEY & LARDNER LLP | 689 | 810 | -15% |
| 11 | FISH & RICHARDSON P.C. | 688 | 777 | -11% |
| 12 | MCDERMOTT WILL & EMERY LLP | 674 | 664 | 2% |
| 13 | VENABLE LLP | 651 | 740 | -12% |
| 14 | MORGAN LEWIS & BOCKIUS LLP | 616 | 718 | -14% |
| 15 | SCHWEGMAN LUNDBERG & WOESSNER P.A. | 510 | 604 | -16% |
| 16 | HAYNES AND BOONE LLP | 495 | 526 | -6% |
| 17 | STUDEBAKER & BRACKETT PC | 491 | 575 | -15% |
| 18 | KILPATRICK TOWNSEND & STOCKTON LLP | 476 | 629 | -24% |
| 19 | SCIENBIZIP P.C. | 458 | 446 | 3% |
| 20 | MICHAEL BEST & FRIEDRICH LLP | 454 | 537 | -15% |
| 21 | MERCHANT & GOULD P.C. | 452 | 466 | -3% |
| 22 | KEATING & BENNETT LLP | 402 | 522 | -23% |
| 22 | MCCLURE QUALEY & RODACK LLP | 402 | 467 | -14% |
| 24 | KNOBBE MARTENS OLSON & BEAR LLP | 384 | 477 | -19% |
| 25 | PATTERSON & SHERIDAN LLP. | 383 | 401 | -4% |
| 26 | LEWIS ROCA ROTHGERBER CHRISTIE LLP | 378 | 361 | 5% |
| 27 | SEED INTELLECTUAL PROPERTY LAW GROUP | 372 | 423 | -12% |
| 28 | F. CHAU & ASSOCIATES LLC | 369 | 399 | -8% |
| 29 | MYERS BIGEL P.A. | 359 | 344 | 4% |
| 30 | CANON U.S.A. INC. IP DIVISION | 352 | 399 | -12% |
| 31 | PERKINS COIE LLP | 351 | 338 | 4% |
| 32 | HAUPTMAN HAM LLP | 348 | 323 | 8% |
| 33 | WORKMAN NYDEGGER | 347 | 313 | 11% |
| 34 | TUTUNJIAN & BITETTO P.C. | 346 | 372 | -7% |
| 35 | SCHWABE WILLIAMSON & WYATT P.C. | 344 | 349 | -1% |
| 36 | MASCHOFF BRENNAN | 326 | 381 | -14% |
| 37 | NIXON & VANDERHYE P.C. | 311 | 229 | 36% |
| 38 | WPAT P.C. INTELLECTUAL PROPERTY ATTORNEYS | 305 | 358 | -15% |
| 39 | FAEGRE DRINKER BIDDLE & REATH LLP | 303 | 286 | 6% |
| 40 | CROWELL & MORING LLP | 300 | 294 | 2% |
| 41 | PEARNE & GORDON LLP | 295 | 285 | 4% |
| 42 | XSENSUS LLP | 292 | 208 | 40% |
| 43 | NSIP LAW | 283 | 305 | -7% |
| 44 | SCULLY SCOTT MURPHY & PRESSER PC | 281 | 348 | -19% |
| 44 | STERNE KESSLER GOLDSTEIN & FOX P.L.L.C. | 281 | 264 | 6% |
| 46 | BANNER & WITCOFF LTD | 275 | 327 | -16% |
| 46 | ESCHWEILER & POTASHNIK LLC | 275 | 295 | -7% |
| 48 | WOLF GREENFIELD & SACKS P.C. | 266 | 299 | -11% |
| 49 | ARENT FOX LLP | 258 | 253 | 2% |
| 50 | LOCKE LORD LLP | 257 | 293 | -12% |
| 51 | VOLPE & KOENIG P.C. | 254 | 309 | -18% |
| 52 | GREENBLUM & BERNSTEIN P.L.C. | 253 | 294 | -14% |
| 53 | ANOVA LAW GROUP PLLC | 248 | 235 | 6% |
| 54 | BROOKS KUSHMAN P.C. | 247 | 267 | -7% |
| 55 | WILLIAM PARK & ASSOCIATES LTD. | 246 | 249 | -1% |
| 56 | MUIR PATENT LAW PLLC | 238 | 193 | 23% |
| 57 | LEYDIG VOIT & MAYER LTD | 237 | 182 | 30% |
| 58 | CKC & PARTNERS CO. LTD. | 234 | 241 | -3% |
| 59 | HAMRE SCHUMANN MUELLER & LARSON P.C. | 233 | 237 | -2% |
| 60 | CHIP LAW GROUP | 232 | 207 | 12% |
| 61 | WITHROW & TERRANOVA P.L.L.C. | 231 | 235 | -2% |
| 62 | DORITY & MANNING P.A. | 226 | 212 | 7% |
| 63 | HOLLAND & HART LLP | 224 | 183 | 22% |
| 63 | MURPHY BILAK & HOMILLER PLLC | 224 | 228 | -2% |
| 65 | DORSEY & WHITNEY LLP | 219 | 252 | -13% |
| 66 | AMIN TUROCY & WATSON LLP | 213 | 232 | -8% |
| 67 | ALSTON & BIRD LLP | 212 | 267 | -21% |
| 68 | NORTON ROSE FULBRIGHT | 210 | 235 | -11% |
| 68 | PILLSBURY WINTHORP SHAW PITTMAN LLP | 210 | 267 | -21% |
| 70 | BUCHANAN INGERSOLL & ROONEY P.C | 209 | 250 | -16% |
| 71 | WOMBLE BOND DICKINSON (US) LLP | 207 | 272 | -24% |
| 72 | KIM & STEWART LLP | 206 | 265 | -22% |
| 73 | FINNEGAN HENDERSON FARABOW GARRETT & DUNNER LLP | 205 | 256 | -20% |
| 74 | H. C. PARK & ASSOCIATES PLC | 203 | 205 | -1% |
| 75 | WELLS ST. JOHN P.S. | 198 | 182 | 9% |
| 76 | WESTERMAN HATTORI DANIELS & ADRIAN LLP | 197 | 177 | 11% |
| 77 | OSHA BERGMAN WATANABE & BURTON LLP | 193 | 187 | 3% |
| 78 | POLSINELLI LLP | 192 | 193 | -1% |
| 79 | DINSMORE & SHOHL LLP | 188 | 158 | 19% |
| 80 | RABIN & BERDO P.C. | 184 | 225 | -18% |
| 81 | IP & T GROUP LLP | 182 | 235 | -23% |
| 82 | SHERIDAN ROSS P.C. | 180 | 221 | -19% |
| 83 | TRASKBRITT P.C. | 179 | 143 | 25% |
| 84 | FENWICK & WEST LLP | 177 | 279 | -37% |
| 85 | LERNER DAVID LITTENBERG KRUMHOLZ & MENTLIK LLP | 176 | 144 | 22% |
| 86 | HOLTZ HOLTZ & VOLEK PC | 173 | 230 | -25% |
| 87 | WENDEROTH LIND & PONACK L.L.P. | 170 | 179 | -5% |
| 88 | DICKINSON WRIGHT PLLC | 169 | 153 | 10% |
| 89 | THE MARBURY LAW GROUP | 167 | 150 | 11% |
| 90 | POSZ LAW GROUP PLC | 165 | 173 | -5% |
| 91 | CROWE & DUNLEVY P.C. | 163 | 149 | 9% |
| 92 | MCDONNELL BOEHNEN HUBERT & BERGHOFF LLP | 162 | 162 | 0% |
| 93 | LEE IP LAW PC | 161 | 188 | -14% |
| 94 | NATH GOLDBERG & MEYER | 158 | 190 | -17% |
| 95 | BRINKS GILSON & LIONE | 156 | 282 | -45% |
| 95 | MINTZ LEVIN COHN FERRIS GLOVSKY AND POPEO PC | 156 | 210 | -26% |
| 97 | WESTMAN CHAMPLIN & KOEHLER P.A. | 155 | 185 | -16% |
| 98 | BROOKS CAMERON & HUEBSCH PLLC | 153 | 158 | -3% |
| 99 | KACVINSKY DAISAK BLUNI PLLC | 151 | 1 | 15000% |
| 100 | DLA PIPER LLP | 150 | 162 | -7% |
| 101 | INNOVATION COUNSEL LLP | 149 | 195 | -24% |
| 101 | KENEALY VAIDYA LLP | 149 | 176 | -15% |
| 103 | IPUSA PLLC | 147 | 119 | 24% |
| 104 | ROBERTS CALDERON SAFRAN & COLE P.C. | 146 | 233 | -37% |
| 105 | BAKER & HOSTETLER LLP | 143 | 174 | -18% |
| 105 | K&L GATES LLP | 143 | 193 | -26% |
| 105 | RANKIN HILL & CLARK LLP | 143 | 134 | 7% |
| 108 | RYAN MASON & LEWIS LLP | 141 | 156 | -10% |
| 108 | THE WEBB LAW FIRM | 141 | 143 | -1% |
| 108 | W&G LAW GROUP | 141 | 16 | 781% |
| 111 | RATNERPRESTIA | 139 | 204 | -32% |
| 112 | LI & CAI INTELLECTUAL PROPERTY | 138 | 171 | -19% |
| 112 | ROSSI KIMMS & MCDOWELL LLP | 138 | 170 | -19% |
| 114 | JEFFERSON IP LAW LLP | 136 | 102 | 33% |
| 115 | RENNER OTTO BOISSELLE & SKLAR LLP | 135 | 153 | -12% |
| 116 | GREER BURNS & CRAIN LTD. | 133 | 116 | 15% |
| 117 | CARTER DELUCA FARRELL & SCHMIDT LLP | 132 | 120 | 10% |
| 117 | HARRITY & HARRITY LLP | 132 | 131 | 1% |
| 119 | HONIGMAN MILLER SCHWARTZ & COHN LLP | 130 | 145 | -10% |
| 120 | ARMSTRONG TEASDALE LLP | 128 | 167 | -23% |
| 121 | CHRISTENSEN O'CONNOR JOHNSON KINDNESS PLLC | 127 | 104 | 22% |
| 121 | DUANE MORRIS LLP | 127 | 142 | -11% |
| 121 | TREYZ LAW GROUP P.C. | 127 | 178 | -29% |
| 124 | ROBINSON INTELLECTUAL PROPERTY LAW OFFICE | 126 | 146 | -14% |
| 125 | GREEN HOWARD & MUGHAL LLP | 125 | 117 | 7% |
| 125 | HP INC. PATENT DEPARTMENT | 125 | 158 | -21% |
| 125 | THOMAS HORSTEMEYER LLP | 125 | 109 | 15% |
| 128 | DALY CROWLEY MOFFORD & DURKEE LLP | 123 | 150 | -18% |
| 129 | BLANK ROME LLP | 122 | 128 | -5% |
| 129 | KILE PARK REED & HOUTTEMAN LLC | 122 | 95 | 28% |
| 131 | FLETCHER YODER P.C. | 121 | 196 | -38% |
| 132 | GLOBAL IP COUNCELORS LLP | 120 | 164 | -27% |
| 132 | SALIWANCHIK LLOYD & EISENSCHENK | 120 | 140 | -14% |
| 134 | HUNTON ANDREWS KURTH LLP | 119 | 119 | 0% |
| 134 | MAIER & MAIER PLLC | 119 | 103 | 16% |
| 134 | VIERRA MAGEN MARCUS LLP | 119 | 118 | 1% |
| 137 | BAYRAMOGLU LAW OFFICES LLC | 118 | 96 | 23% |
| 137 | WEAVER AUSTIN VILLENEUVE & SAMPSON LLP | 118 | 107 | 10% |
| 139 | SHUMAKER & SIEFFERT P.A. | 117 | 149 | -21% |
| 140 | NIXON & PEABODY LLP | 114 | 147 | -22% |
| 141 | SCHIFF HARDIN LLP | 113 | 165 | -32% |
| 142 | BARLEY SNYDER | 112 | 87 | 29% |
| 142 | DICKE BILLIG & CJAZA PLLC | 112 | 122 | -8% |
| 142 | FISHERBROYLES LLP | 112 | 110 | 2% |
| 142 | KOWERT HOOD MUNYON RANKIN & GOETZEL P.C. | 112 | 109 | 3% |
| 142 | PROCOPIO CORY HARGREAVES & SAVITCH LLP | 112 | 97 | 15% |
| 147 | BAKER BOTTS L.L.P | 111 | 137 | -19% |
| 147 | CONLEY ROSE P.C. | 111 | 122 | -9% |
| 149 | GREENBERG TRAURIG LLP | 109 | 78 | 40% |
| 149 | LANWAY IPR SERVICES | 109 | 67 | 63% |
| 151 | MH2 TECHNOLOGY LAW GROUP LLP | 108 | 77 | 40% |
| 151 | PATENT CAPITAL GROUP | 108 | 112 | -4% |
| 153 | LADAS & PARRY LLP | 106 | 131 | -19% |
| 154 | BARNES & THORNBURG LLP | 105 | 123 | -15% |
| 154 | QUARLES & BRADY LLP | 105 | 155 | -32% |
| 156 | EVERSHEDS SUTHERLAND (US) LLP | 101 | 132 | -23% |
| 157 | MAGINOT MOORE & BECK LLP | 100 | 95 | 5% |
| 157 | VOLENTINE WHITT & FRANCOS PLLC | 100 | 131 | -24% |
| 159 | CALFEE HALTER & GRISWOLD LLP | 99 | 127 | -22% |
| 159 | SNELL & WILMER L.L.P. | 99 | 123 | -20% |
| 161 | TAROLLI SUNDHEIM COVELL & TUMMINO L.L.P. | 97 | 148 | -34% |
| 162 | FAY SHARPE LLP | 96 | 77 | 25% |
| 162 | LOWENSTEIN & SANDLER LLP | 96 | 77 | 25% |
| 162 | THE FARRELL LAW FIRM P.C | 96 | 98 | -2% |
| 165 | HOFFMAN WARNICK LLC | 95 | 99 | -4% |
| 165 | MCANDREWS HELD & MALLOY LTD. | 95 | 105 | -10% |
| 167 | CARLSON GASKEY & OLDS. P.C. | 94 | 92 | 2% |
| 167 | HODGSON RUSS LLP | 94 | 99 | -5% |
| 167 | MATTINGLY & MALUR PC | 94 | 134 | -30% |
| 170 | SHEPPARD MULLIN RICHTER & HAMPTON LLP | 93 | 95 | -2% |
| 171 | LEE & HAYES PLLC | 92 | 88 | 5% |
| 172 | J.C. PATENTS | 91 | 79 | 15% |
| 172 | KINNEY & LANGE P.A. | 91 | 176 | -48% |
| 174 | KIRTON MCCONKIE PC | 90 | 62 | 45% |
| 174 | ROSENBERG KLEIN & LEE | 90 | 92 | -2% |
| 174 | TAFT STETTININUS & HOLLISTER LLP | 90 | 156 | -42% |
| 177 | BAYES PLLC | 86 | 41 | 110% |
| 177 | LEMPIA SUMMERFIELD KATZ LLC | 86 | 110 | -22% |
| 179 | BACON & THOMAS PLLC | 85 | 104 | -18% |
| 179 | SUITER SWANTZ PC LLO | 85 | 85 | 0% |
| 181 | COOPER LEGAL GROUP LLC | 84 | 65 | 29% |
| 181 | SCHMEISER OLSEN & WATTS LLP | 84 | 80 | 5% |
| 183 | FITCH EVEN TABIN & FLANNERY LLP | 83 | 86 | -3% |
| 184 | ENDRESS&HAUSER INC | 82 | 36 | 128% |
| 184 | IPRO PLLC | 82 | 176 | -53% |
| 184 | STAAS & HALSEY LLP | 82 | 99 | -17% |
| 187 | COZEN O'CONNOR | 81 | 98 | -17% |
| 187 | YOUNG BASILE HANLON & MACFARLANE P.C. | 81 | 96 | -16% |
| 189 | ARCH & LAKE LLP | 80 | 35 | 129% |
| 189 | BRAKE HUGHES BELLERMAN LLP | 80 | 76 | 5% |
| 189 | DENTONS | 80 | 104 | -23% |
| 189 | NOVICK KIM & LEE PLLC | 80 | 48 | 67% |
| 193 | SERVILLA WHITNEY LLC | 79 | 49 | 61% |
| 194 | METIS IP LAW LLC | 78 | 87 | -10% |
| 195 | MCGINN IP LAW GROUP PLLC | 77 | 109 | -29% |
| 195 | THOMPSON HINE LLP | 77 | 137 | -44% |
| 195 | VIERING JENTSCHURA & PARTNER MBB | 77 | 68 | 13% |
| 198 | MARSHALL GERSTEIN & BORUN LLP | 76 | 78 | -3% |
| 199 | KLARQUIST SPARKMAN LLP | 75 | 101 | -26% |
| 200 | EDELL SHAPIRO & FINNAN LLC | 74 | 79 | -6% |
| 200 | MCCOY RUSSELL LLP | 74 | 92 | -20% |
| 200 | QUINN IP LAW | 74 | 55 | 35% |
| 203 | LEASON ELLIS LLP | 73 | 79 | -8% |
| 204 | HUSCH BLACKWELL LLP | 72 | 64 | 13% |
| 204 | TROUTMAN PEPPER | 72 | 106 | -32% |
| 206 | FOX ROTHSCHILD LLP | 71 | 65 | 9% |
| 206 | KED & ASSOCIATES LLP | 71 | 125 | -43% |
| 206 | LANDO & ANASTASI LLP | 71 | 81 | -12% |
| 206 | W&G LAW GROUP LLP | 71 | 16 | 344% |
| 210 | JONES DAY | 67 | 77 | -13% |
| 211 | BURR & BROWN PLLC | 66 | 69 | -4% |
| 212 | SMITH BALUCH LLP | 64 | 49 | 31% |
| 213 | ALLEMAN HALL CREASMAN & TUTTLE LLP | 63 | 78 | -19% |
| 213 | HANLEY FLIGHT & ZIMMERMAN LLC | 63 | 64 | -2% |
| 213 | SQUIRE PATTON BOGGS LLP | 63 | 67 | -6% |
| 213 | WHITE & CASE LLP | 63 | 79 | -20% |
| 217 | FUJITSU PATENT CENTER | 62 | 93 | -33% |
| 218 | METROLEX IP LAW GROUP PLLC | 61 | 79 | -23% |
| 218 | PRICE HENEVELD LLP | 61 | 88 | -31% |
| 220 | C. TUMEY LAW GROUP PLLC | 60 | 32 | 88% |
| 220 | CHEN YOSHIMURA LLP | 60 | 96 | -38% |
| 220 | GTC LAW GROUP PC & AFFILIATES | 60 | 15 | 300% |
| 223 | LOZA & LOZA LLP | 59 | 61 | -3% |
| 223 | MAYER & WILLIAMS PC | 59 | 70 | -16% |
| 223 | SMITH TEMPEL BLAHA LLC | 59 | 30 | 97% |
| 226 | BURNS & LEVINSON LLP | 58 | 56 | 4% |
| 227 | JACKSON WALKER L.L.P. | 57 | 79 | -28% |
| 227 | KUNZLER BEAN & ADAMSON | 57 | 73 | -22% |
| 227 | MEUNIER CARLIN & CURFMAN LLC | 57 | 58 | -2% |
| 230 | BOOKOFF MCANDREWS LLC | 56 | 53 | 6% |
| 230 | BURRIS LAW PLLC | 56 | 46 | 22% |
| 230 | COLLARD & ROE P. C. | 56 | 65 | -14% |
| 230 | FABIAN VANCOTT | 56 | 24 | 133% |
| 230 | PATTERSON THUENTE PEDERSEN P.A. | 56 | 48 | 17% |
| 230 | SLAYDEN GRUBERT BEARD PLLC | 56 | 68 | -18% |
| 236 | ABELMAN FRAYNE & SCHWAB | 55 | 53 | 4% |
| 236 | CHA & REITER LLC | 55 | 47 | 17% |
| 236 | COOLEY LLP | 55 | 59 | -7% |
| 236 | HESLIN ROTHENBERG FARLEY & MESITI P.C. | 55 | 74 | -26% |
| 236 | LATHROP & GAGE L.L.P. | 55 | 84 | -35% |
| 236 | LUCAS & MERCANTI LLP | 55 | 90 | -39% |
| 236 | MORRISON & FOERSTER LLP | 55 | 47 | 17% |
| 236 | OSTROLENK FABER LLP | 55 | 49 | 12% |
| 236 | QUALCOMM INCORPORATED | 55 | 31 | 77% |
| 236 | ROTHWELL FIGG ERNST & MANBECK P.C. | 55 | 63 | -13% |
| 236 | STEIN IP LLC | 55 | 51 | 8% |
| 247 | SHUMAKER LOOP & KENDRICK LLP | 54 | 52 | 4% |
| 248 | ADAM R. STEPHENSON LTD. | 53 | 76 | -30% |
| 248 | DUFT BORNSEN & FETTIG LLP | 53 | 48 | 10% |
| 248 | HAYES SOLOWAY P.C. | 53 | 68 | -22% |
| 248 | LORENZ & KOPF LLP | 53 | 31 | 71% |
| 248 | MICHAEL J. CHANG LLC | 53 | 62 | -15% |
| 248 | MILES & STOCKBRIDGE P.C. | 53 | 39 | 36% |
| 248 | MOSER TABOADA | 53 | 53 | 0% |
| 248 | SGPATENTS PLLC | 53 | 79 | -33% |
| 256 | COMPASS IP LAW | 52 | 47 | 11% |
| 256 | HENRY M. FEIEREISEN LLC | 52 | 37 | 41% |
| 258 | FLEIT INTELLECTUAL PROPERTY LAW | 51 | 64 | -20% |
| 258 | JAQUEZ LAND GREENHAUS & MCFARLAND LLP | 51 | 67 | -24% |
| 258 | PARATUS LAW GROUP PLLC | 51 | 55 | -7% |
| 261 | SAGE PATENT GROUP | 50 | 41 | 22% |
| 261 | TROP PRUNER & HU P.C. | 50 | 63 | -21% |
If you have any questions about the Top Patent Firms list, or any other patent analytics related questions, feel free to contact:
Rocky Berndsen
Head of Patent Analytics
rberndsen@harrityllp.com