| Surname ending shows gender & marital status | -as/-us/-ys marks men, -ienė married and -aitė/-ytė/-utė unmarried women. Kazlauskas, Kazlauskienė and Kazlauskaitė belong to one family — miss it and you split or confuse relatives. | Native speakers assign the name forms to the right person and make the family link clear on the certificate, so marital status is not accidentally changed. |
| Foreign names lithuanised & declined | Foreign names take Lithuanian endings and inflect: "Schmidt" → Šmitas, "Müller" → Miuleris. Passport name and text form then diverge. | The lithuanised form is used where the grammar requires it, but the original name is secured in brackets and in the note — no gap between certificate and passport. |
| Nine special letters ą č ę ė į š ų ū ž | The hooks and macrons are meaningful (nasality, vowel length); ū is not u, ė is not e. Strip them and word and name change. | All diacritics are set faithfully; names are checked against the source document and the passport spelling. |
| Seven cases + vocative, no articles | Lithuanian has seven cases including a vocative and no article; relations are built by endings. Carrying German article and clause patterns across 1:1 yields un-Lithuanian sentences. | We write from the target language, with correct case and vocative forms rather than passed-through German structures. |
| Archaic structure — not word-for-word | As a very conservative Indo-European language, Lithuanian builds sentences differently from German; a literal rendering sounds foreign and turns ambiguous in places. | Native specialists carry meaning and structure, not word order — checked in four-eyes revision. |
| German place-name exonyms | Older deeds from East Prussia / Lithuania Minor bear German names: Memel = Klaipėda, Kauen/Kowno = Kaunas, Wilna = Vilnius. | Historic exonyms are matched to today's official Lithuanian place name, with a note where the deed requires it. |
| Certification: notarial, not "sworn" | Lithuania has no state system of sworn translators as Germany does; the accuracy of a translation is usually confirmed there by a notary (notaras). | We clarify in advance where the document is to apply: a certified translation by an authorised translator for Germany, or a notary-confirmed translation for Lithuania. |