… anticipates filing of Canadian regulatory submission for DONESTA … . (“Searchlight”), a private Canadian-specialty pharmaceutical company, have … vaginal contraceptive ring in Canada (MYRING® project). NEXTSTELLIS® … of the unique native estrogen estetrol in …… anticipates filing of Canadian regulatory submission for DONESTA … . (“Searchlight”), a private Canadian-specialty pharmaceutical company, have … vaginal contraceptive ring in Canada (MYRING® project). NEXTSTELLIS® … of the unique native estrogen estetrol in …