PATENT ANNUITY · USD
Bulgaria Design annuity fees
Annual fees, late-payment fees and additional charges are displayed separately for clarity.
Patent annuity details
Converted amounts use the latest synchronized approved exchange rates.
Patent annuity fees
Annual maintenance fees are maintained independently by country and patent type.
| Year / item | Required / optional | General pricing | Notes | ||
|---|---|---|---|---|---|
| Official fee (original) | Service fee (USD) | Total | |||
| Year 11 · Annuity | Required | 138 EUR | 390 USD | 544 USD | — |
| Year 16 · Annuity | Required | 184 EUR | 390 USD | 596 USD | — |
| Year 21 · Annuity | Required | 256 EUR | 390 USD | 676 USD | — |
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