Approximately 35138 patent applications published in 2009 (76.7% national phase, 0.4% divisionals). The following table is a list of the top 50 agents by volume of applications published in 2009.
| Rank | Agent | Applications Published | Percentage of total applications | % of applications being PCT | # of applications being PCT |
|---|---|---|---|---|---|
| 1 | SMART & BIGGAR | 4588 | 13.1% | 86.0% | 3945 |
| 2 | GOWLING LAFLEUR HENDERSON LLP | 3457 | 9.8% | 79.9% | 2762 |
| 3 | OGILVY RENAULT LLP/S.E.N.C.R.L.,S.R.L. | 2399 | 6.8% | 81.0% | 1942 |
| 4 | FETHERSTONHAUGH & CO. | 2246 | 6.4% | 91.9% | 2063 |
| 5 | BORDEN LADNER GERVAIS LLP | 2176 | 6.2% | 79.7% | 1734 |
| 6 | RIDOUT & MAYBEE LLP | 1695 | 4.8% | 75.8% | 1284 |
| 7 | BERESKIN & PARR | 1485 | 4.2% | 81.9% | 1216 |
| 8 | ROBIC | 1375 | 3.9% | 82.7% | 1137 |
| 9 | SIM & MCBURNEY | 1162 | 3.3% | 81.6% | 948 |
| 10 | MARKS & CLERK | 1040 | 3.0% | 83.0% | 863 |
| 11 | GOUDREAU GAGE DUBUC | 825 | 2.3% | 71.0% | 586 |
| 12 | no agent | 812 | 2.3% | 7.0% | 57 |
| 13 | KIRBY EADES GALE BAKER | 807 | 2.3% | 84.9% | 685 |
| 14 | MACRAE & CO. | 648 | 1.8% | 61.3% | 397 |
| 15 | RICHES, MCKENZIE & HERBERT LLP | 629 | 1.8% | 83.5% | 525 |
| 16 | MCFADDEN, FINCHAM | 537 | 1.5% | 50.3% | 270 |
| 17 | OYEN WIGGS GREEN & MUTALA LLP | 511 | 1.5% | 80.8% | 413 |
| 18 | MBM | 493 | 1.4% | 88.4% | 436 |
| 19 | TORYS LLP | 455 | 1.3% | 97.6% | 444 |
| 20 | OSLER, HOSKIN & HARCOURT LLP | 436 | 1.2% | 89.4% | 390 |
| 21 | FINLAYSON & SINGLEHURST | 424 | 1.2% | 64.4% | 273 |
| 22 | CASSAN MACLEAN | 422 | 1.2% | 89.1% | 376 |
| 23 | BLAKE, CASSELS & GRAYDON LLP | 409 | 1.2% | 75.6% | 309 |
| 24 | MOFFAT & CO. | 353 | 1.0% | 76.2% | 269 |
| 25 | CRAIG WILSON AND COMPANY | 310 | 0.9% | 37.4% | 116 |
| 26 | DIMOCK STRATTON LLP | 281 | 0.8% | 80.4% | 226 |
| 27 | BCF LLP | 244 | 0.7% | 81.6% | 199 |
| 28 | BATTISON WILLIAMS DUPUIS | 238 | 0.7% | 31.9% | 76 |
| 29 | FASKEN MARTINEAU DUMOULIN LLP | 218 | 0.6% | 80.7% | 176 |
| 30 | SHAPIRO COHEN | 217 | 0.6% | 72.4% | 157 |
| 31 | MCCARTHY TETRAULT LLP | 212 | 0.6% | 81.6% | 173 |
| 32 | DEETH WILLIAMS WALL LLP | 178 | 0.5% | 78.1% | 139 |
| 33 | PERRY + CURRIER | 175 | 0.5% | 57.1% | 100 |
| 34 | BENNETT JONES LLP | 138 | 0.4% | 55.8% | 77 |
| 35 | MACPHERSON LESLIE & TYERMAN LLP | 132 | 0.4% | 46.2% | 61 |
| 36 | DENNISON ASSOCIATES | 132 | 0.4% | 47.7% | 63 |
| 37 | INTEGRAL IP | 106 | 0.3% | 90.6% | 96 |
| 38 | STIKEMAN ELLIOTT LLP | 104 | 0.3% | 76.0% | 79 |
| 39 | G. RONALD BELL & ASSOCIATES | 102 | 0.3% | 69.6% | 71 |
| 40 | PIASETZKI & NENNIGER LLP | 97 | 0.3% | 74.2% | 72 |
| 41 | BROUILLETTE & ASSOCIES/PARTNERS | 94 | 0.3% | 45.7% | 43 |
| 42 | NICOLAESCU, SAWYER | 80 | 0.2% | 95.0% | 76 |
| 43 | BENOIT & COTE,S.E.N.C. | 77 | 0.2% | 97.4% | 75 |
| 44 | LANG MICHENER LLP | 74 | 0.2% | 71.6% | 53 |
| 45 | GOODWIN MCKAY | 74 | 0.2% | 44.6% | 33 |
| 46 | WANG, PETER | 74 | 0.2% | 55.4% | 41 |
| 47 | HILL & SCHUMACHER | 72 | 0.2% | 84.7% | 61 |
| 48 | BRANDT, KERSTIN B. | 69 | 0.2% | 78.3% | 54 |
| 49 | THOMPSON, DOUGLAS B. | 67 | 0.2% | 10.4% | 7 |
| 50 | PERLEY-ROBERTSON, HILL & MCDOUGALL LLP | 67 | 0.2% | 56.7% | 38 |
Remaining agents are responsible for 2122 published applications (6.0%).
All numbers are approximate. Firms are listed as they appear on CIPO’s tombstone pages for individual patents/patent applications. Applications filed under the name of an individual agent are not included within the total for a firm.