As Regulation (EC) No 1082/2006 cannot apply in third countries, the Member State where the proposed registered office of the EGTC is to be located should, when approving the participation of prospective members from third countries, established under the law of those third countries, satisfy itself, in consultation with those Member States under whose laws other prospective members of the EGTC have been established, that the third countries have applied equivalent conditions and procedures to those laid down in Regulation (EC) No 1082/2006 or acted in accordance with international bilateral or multilateral agreements concluded between Member States of the Council of Europe, whether or not they are also Member States of the Union, based on the European Outline Convention on Transfrontier Co-operation between Territorial Communities or Authorities, signed in Madrid on 21 May 1980, and the additional Protocols adopted pursuant thereto.
Toisc nach féidir feidhm a bheith ag Rialachán (CE) Uimh. 1082/2006 i dtríú tíortha, ba cheart don Bhallstát ina mbeidh oifig chláraithe bheartaithe EGTC le lonnú, agus rannpháirtíocht chomhaltaí ionchasacha ó thríú tiortha, arna mbunú faoi dhlí na dtríú tíortha sin, á formheas aige, deimhin a dhéanamh de, i gcomhairle leis na Ballstáit sin ar faoina ndlíthe a bunaíodh comhaltaí ionchasacha eile d'EGTC, go bhfuil curtha i bhfeidhm ag na tríú tíortha coinníollacha agus nósanna imeachta atá coibhéiseach leo siúd a leagtar síos i Rialachán (CE) Uimh. 1082/2006 nó gur ghníomhaigh siad i gcomhréir le comhaontuithe idirnáisiúnta déthaobhacha nó iltaobhacha arna dtabhairt i gcrích idir Ballstáit de Chomhairle na hEorpa, cibé an Ballstáit iad de chuid an Aontais iad freisin nó nach ea, bunaithe ar an gCoinbhinsiún Imlíneach Eorpach maidir le Comhar Trasteorann idir Pobail nó Údaráis Chríochacha, arna shíniú i Maidrid an 21 Bealtaine 1980, agus ar na Prótacail bhreise a glacadh dá bhun.