| 85162184 | ELEMENTS/PRO | Parametric Technology Corporation | 4106495 |
| 85162222 | ELEMENTS/VIEW | Parametric Technology Corporation | 4106497 |
| 75257529 | EPD.CONNECT | PARAMETRIC TECHNOLOGY CORPORATION | 2348921 |
| 75105993 | PRO/TOOLKIT | Parametric Technology Corporation | 2179055 |
| 73688799 | PRO/ENGINEER | PARAMETRIC TECHNOLOGY CORPORATION | 1492046 |
| 74662768 | PARAMETRIC TECHNOLOGY CORPORATION | Parametric Technology Corporation | 1963315 |
| 74529561 | PHOTORENDER | PARAMETRIC TECHNOLOGY CORPORATION | 1962523 |
| 76699432 | MATHCAD PRIM | Parametric Technology Corporation | 3998318 |
| 76703574 | CREATE COLLABORATE CONTROL CONFIGURE COMMUNICATE | Parametric Technology Corporation | 3968189 |
| 76695347 | INSIGHT | Parametric Technology Corporation | 3814869 |
| 78109886 | WILDFIRE | Parametric Technology Corporation | 3109892 |
| 78153276 | THE WAY TO PRODUCT FIRST | Parametric Technology Corporation | 2846552 |
| 78094599 | PTC PROJECTLINK | Parametric Technology Corporation | — |
| 76580780 | DCAM | PARAMETRIC TECHNOLOGY CORPORATION | 2930423 |
| 74648321 | PRO/JR. | Parametric Technology Corporation | 1960167 |
| 74640177 | PRO/JR. | Parametric Technology Corporation | 1951252 |
| 75360261 | PRO/HELP | Parametric Technology Corporation | 2260432 |
| 85163426 | ANYROLE ANYMODE ANYDATA ANYBOM | Parametric Technology Corporation | — |
| 85163399 | ANYROLE ANYMODE ANYDATA ANYBOM ANYWARE | Parametric Technology Corporation | — |
| 76705643 | WINDCHILL QLMLINK | Parametric Technology Corporation | — |
| 76695194 | PRODUCTVIEW | Parametric Technology Corporation | 3735546 |
| 78976210 | WINDCHILL DYNAMICDESIGNLINK | Parametric Technology Corporation | 3074792 |
| 78915867 | NETRM | PARAMETRIC TECHNOLOGY CORPORATION | 3237043 |
| 78450718 | CALCULATION MANAGEMENT SUITE | PARAMETRIC TECHNOLOGY CORPORATION | 3009783 |
| 78449711 | DESIGNATE | PARAMETRIC TECHNOLOGY CORPORATION | 3030683 |
| 78224751 | WINDCHILL SUPPLYLINK | Parametric Technology Corporation | — |
| 78211698 | SIMPLE POWERFUL CONNECTED | Parametric Technology Corporation | 2891932 |
| 78153289 | WINDCHILL DYNAMICDESIGNLINK | Parametric Technology Corporation | — |
| 78109884 | PTC PDMLINK | Parametric Technology Corporation | — |
| 78104774 | PMTC | Parametric Technology Corporation | — |
| 78104770 | PRODUCT MAKES THE COMPANY | Parametric Technology Corporation | 2799182 |
| 78104769 | PRODUCTS 1ST | Parametric Technology Corporation | — |
| 78104767 | PRODUCT 1ST | Parametric Technology Corporation | — |
| 78104766 | PRODUCTS FIRST | Parametric Technology Corporation | — |
| 78104764 | PRODUCT FIRST | Parametric Technology Corporation | 2760322 |
| 78094915 | CREATE COLLABORATE CONTROL | Parametric Technology Corporation | 2854923 |
| 78094621 | PTC DYNAMICDESIGNLINK | Parametric Technology Corporation | — |
| 78094600 | PTC PARTSLINK | Parametric Technology Corporation | — |
| 78059179 | PRODUCT DEVELOPMENT MEANS BUSINESS | Parametric Technology Corporation | 2887425 |
| 78044413 | WINDCHILL PROJECTLINK | Parametric Technology Corporation | — |
| 77369559 | BILL OF IMPACT | PARAMETRIC TECHNOLOGY CORPORATION | — |
| 76645280 | INTERCOMM | Parametric Technology Corporation | 3270728 |
| 76581209 | E3 | PARAMETRIC TECHNOLOGY CORPORATION | 2934570 |
| 76481168 | MATHSOFT | PARAMETRIC TECHNOLOGY CORPORATION | 2752836 |
| 76466388 | MATHSOFT | PARAMETRIC TECHNOLOGY CORPORATION | 2836034 |
| 76390480 | PTC | Parametric Technology Corporation | 2734187 |
| 76272132 | STUDYWORKS! ONLINE | PARAMETRIC TECHNOLOGY CORPORATION | 2604376 |
| 76144679 | ONESPACE | PARAMETRIC TECHNOLOGY CORPORATION | 2512342 |
| 76104274 | NETREGULUS | PARAMETRIC TECHNOLOGY CORPORATION | 2638255 |
| 76104273 | NETREGULUS | PARAMETRIC TECHNOLOGY CORPORATION | 2670978 |