| Logo Mark Duolingo, Inc.
88718544 06 Dec 2019 | on 08 Aug 2023
| Lapel pins; Decorative pins, namely, ornamental lapel pins, ornamental... Class 014 Class 014 Jewelry Products Color is not claimed as a feature of the mark. | | | Logo Mark Duolingo, Inc.
88718553 06 Dec 2019 | on 07 Feb 2023
| Software as a service (SAAS) services featuring software for learning ... Class 042 Class 042 Computer & Software Services & Scientific Services The mark consists of an owl with large eyes, a beak, and three half circle feathers on the chest. | | | DUOLINGO Duolingo, Inc.
90157386 03 Sep 2020 | on 13 Sep 2022
| Stuffed and plush toys Class 028 Class 028 Toys and Sporting Goods Products Stuffed and plush toys | | | Logo Mark Duolingo, Inc.
88718551 06 Dec 2019 | on 01 Mar 2022
| Language instruction; Providing a website featuring non-downloadable i... Class 041 Class 041 Education and Entertainment Services Language instruction; Providing a website featuring non-downloadable instructional videos and tutorial videos in the field of language proficiency | | | Logo Mark Duolingo, Inc.
90181841 15 Sep 2020 | on 23 Feb 2021
| Downloadable software in the nature of a mobile application which prov... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products The color(s) green, white, black, and orange is/are claimed as a feature of the mark. | | | DUOLINGO Duolingo, Inc.
90052187 14 Jul 2020 | on 16 Feb 2021
| providing online, non-downloadable computer software for enabling an i... Class 041 Class 041 Education and Entertainment Services education services, namely, providing language proficiency testing and assessment services Class 042 Class 042 Computer & Software Services & Scientific Services providing online, non-downloadable computer software for enabling an interactive website for use in connection with language proficiency testing and assessment | | | DUOLINGO Duolingo, Inc.
88718539 06 Dec 2019 | on 22 Sep 2020
| Software as a service (SAAS) services featuring software for learning ... Class 042 Class 042 Computer & Software Services & Scientific Services Software as a service (SAAS) services featuring software for learning foreign languages; Providing a website featuring non-downloadable software for learning foreign languages | | | Logo Mark Duolingo, Inc.
88703483 22 Nov 2019 | on 23 Jun 2020
| Downloadable software in the nature of a mobile application which prov... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products Color is not claimed as a feature of the mark. | | | DUOLINGO ABC Duolingo, Inc.
97917223 02 May 2023 | on 21 May 2024 | Educational services, namely, providing online interactive instruction... Class 041 Class 041 Education and Entertainment Services Educational services, namely, providing online interactive instruction in the field of literacy | | | DUOLINGO ABC Duolingo, Inc.
97917219 02 May 2023 | on 21 May 2024 | Downloadable software for literacy development and education; download... Class 009 Class 009 Computer & Software Products & Electrical & Scientific Products Downloadable software for literacy development and education; downloadable mobile application software for literacy development and education | | 
