War and neutrality — War in general — Definition — Patents Act 1949 — Hostilities with "any foreign state" — Whether including unrecognised State — Korean conflict — The law of England

Recognition — Of States and Governments — Non-recognition — Effects in municipal law — Patents — Extension of on grounds of war loss — Patents Act, 1949, section 24 — Hostilities with any “foreign state” — Whether including unrecognised states with defined territories and effective government in control — Status of North Korea — Whether question of fact for court — Whether Foreign Office certificate conclusive — The law of England