Verdict: the engine flags this as CRITICAL — do not treat LUVLOKK as clear for a dating app. The phonetic net pulled 513 sound-alike hits (METAPHONE "LFLK"), and several land squarely in your market — 17 high and 20 medium conflicts overall. The ones that actually matter:
| Mark | Serial | Status | Classes | Goods/Services |
|---|---|---|---|---|
| LOVELOCK | 99359483 | Registered | 45 | Marriage partner introduction / dating services |
| LUVLO | 99514615 | Registered | 9, 41 | Downloadable audio-visual & music recordings |
| LUVLINK | 79318043 | Registered | 9 | Downloadable software to share content |
| LUVLY | 98007877 | Registered | 9 | Downloadable mobile app software |
LOVELOCK is the standout obstacle. It's a live registration in Class 45 for marriage partner introduction and dating services — essentially identical services — and "LOVELOCK" vs. "LUVLOKK" is a phonetic near-twin. This is the one most likely to block you outright under §2(d).
The broader "LUV-" field is crowded (LUVLY, LUVLOOP, LUVLOOK…), which cuts both ways: "LUV" is a weak, diluted prefix — but the second element ("LOKK"/"LOCK") is what ties you dangerously close to LOVELOCK specifically.
Bottom line: LUVLOKK carries critical §2(d) risk for a dating app. I wouldn't recommend proceeding without a plan to distinguish or clear LOVELOCK. Want me to run a full 13-factor DuPont analysis of LUVLOKK vs. LOVELOCK, pull crowded-field evidence on the "LUV" prefix, or check domain availability?
Why this needs a phonetic index
A general model can’t run a phonetic search of the register — it doesn’t have one. It would call LUVLOKK "likely available" because the literal string is unregistered. Markus expanded to 513 sound-alikes and surfaced a registered, phonetically identical mark covering the identical services — the refusal you’d otherwise discover ten months and one filing fee later.
All statuses and registration numbers independently re-verified (LOVELOCK Reg. 8202856; LUVLO Reg. 8303965; LUVLINK Reg. 6854616), July 2026. Client mark and scenario fictionalized.