Owner review 47: can we use 완두 / Wandu? (2026-10-27)
Status: Reference · Date: 2026-10-27 · The owner: "완두 is a cute name. Something round, green and peas in a pod. Anything like this? It hits at multiple levels. Can we see if we can use it for our app?" A deep knock-out search in the way of review 21's Dabusi clearance, not legal advice; a 변리사 must run the sound (칭호) search before any filing. Part of owner review 47.
Verdict: not clear to use as the master brand
The picture is right (round and green like a ball, members in one pod, two peas like a doubles pair), but the name is already in use next to us:
- A live app called 완두 in a neighbouring category. On the App Store (KR and US), "완두" by Dongyeop Gu, released 2026-09-29, Productivity: "가족의 일정을 한곳에 모아 관리하는 가족 공유 캘린더", families joined by an invite code, shared schedules, AI that turns sentences into events. Its site is
wandu.kr("완두 - 가족의 시간을 함께 키우다"). Group schedules joined by an invite code is our own core loop, so store search and word of mouth would mix the two. - A pending 완두콩 in classes 9 and 42, filed the same day (2026-09-29) by 현창엽: photo and video software, photo transfer to phones, cloud storage, SaaS. It is likely that app's mark. Korea grants a mark to whoever files first, and 완두콩 is 완두 plus the generic 콩, so KIPO would likely judge 완두 similar in sound and meaning. If it registers, a 완두 filing in 9 and 42 could be refused.
- Two more 완두콩 marks in our classes: 완두콩 (120), published for registration (공고), classes 35 and 38, 최재호, 2025 (webtoon information transmission, advertising, marketing); and 완두콩, registered 2011, class 41, 동아출판(주) (publishing, education, tutoring).
- The addresses are gone:
wandu.comandwandu.net(宛都科技, a Chinese internet company, since 2006),wandu.app(완두, an AI case-study platform for nursing students, registered 2026-06-14),wandu.kr(the family calendar),wandu.co.kr,wandu.co,완두.com,완두.kr. Free:wandu.io,wandu.club,wandu.team,getwandu.com,wanduapp.com,joinwandu.com. The bare@wanduis taken on X, YouTube, GitHub, TikTok and Naver Blog;@wanduappis free on all five.
The record
KIPRIS (title queries TN=[...], every page read, 2026-10-27; classes 9, 35, 36, 38, 41, 42, 45 are ours):
| Query | Rows | Live marks in our classes |
|---|---|---|
| 완두 | 53 | none identical |
| 완두콩 | 27 | 완두콩 (출원, 9/42, 현창엽, 2026-09-29); 완두콩 (120) (공고, 35/38, 최재호, 2025-07-15); 완두콩 (등록, 41, 동아출판(주), 2011) |
| Wandu | 4 | none |
| 완두네, 완두야 | 53 each | none identical; the rows are 완두 compounds outside our classes (완두톡, 해태완두로, 농심 콩콩완두칩, 완두콩 칫솔, cosmetics) |
| 원두 (coffee beans, a sound-alike) | 378 | none identical in our classes |
| 완도 (the island county, a sound-alike) | 386 | none identical in our classes |
Abroad: the USPTO holds one live WANDU (Sempio Foods, class 30, food); TMview holds WANDU and wandu in classes 7, 11, 12, 19, 22, 29, 30 and 34 (CN, GB, EU, KR, US) and one in our classes, WANDU in Argentina, class 42. The spelling Wandoo is crowded in finance (class 36 in the EU, the UK, Mexico, Peru, Georgia) and in 9 and 35 in Poland and the EU, and it is an Australian eucalyptus; Wandu is the better Latin form.
Stores: besides the family calendar, Wandoo! (Hyerin Choe) and WANDOO: Offline Hiking Maps (AppManage LLC) are on the App Store.
What would make it usable
- The 9/42 question first. A 변리사 checks the pending 완두콩 (the applicant, its use, and whether 완두 and 완두콩 would be judged similar for an app in 9 and 42). If the family-calendar team holds it, 완두 is theirs in our core classes.
- A distinct compound keeps the picture without the conflict only if 완두 is not its dominant part, which is hard: KIPO reads 완두 as the core of most compounds. The cousins in the shortlist (깍지 and its forms, 풋콩, 청포도 and others) were screened instead.