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| Subject | English | Russian |
| law | action seeking declaration of invalidity | иск о признании незаконным (иск о признании незаконным решения... – action seeking declaration of invalidity of the decision... Incognita) |
| law | invalidity action | иск о признании незаконным (The invalidity action before an NPO or national court can in some countries, such as Germany, not be brought while an opposition is pending before the EPO aldrignedigen) |