I recently modified software code licensed under EPL v1.0. Can I remove the original copyright and add my own copyright ?
Unless you replaced all the original code, the original copyright remains. You can add your own (assuming your changes are non-trivial), but you must preserve the original copyright; something like
/* * Copyright © ... original holder * Copyright © 2016 Anveshak * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */
Section 3 of the EPL makes this explicit:
Contributors may not remove or alter any copyright notices contained within the Program.
Each Contributor must identify itself as the originator of its Contribution, if any, in a manner that reasonably allows subsequent Recipients to identify the originator of the Contribution.