Certificate Of Incorporation

Amended and Restated Certificate of Incorporation of Altera Corporation

by Altera
December 28th, 2015

Exhibit 3.1

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

ALTERA CORPORATION

FIRST: The name of the corporation is Altera Corporation (the “Corporation”).

SECOND: The address of the registered office of the Corporation in the State of Delaware and the name and address of the registered agent for service of process on the Corporation in the State of Delaware is: Corporation Service Company, 2711 Centerville Road, Suite 400, Wilmington, DE 19808, County of New Castle.

THIRD: The purpose of the Corporation is to engage in any and all lawful acts or activities for which corporations may be organized under the General Corporation Law of the State of Delaware, as from time to time amended.

FOURTH: The total number of shares of capital stock that the Corporation shall have authority to issue is 1,000, all of which shares shall be designated as Common Stock having a par value of $0.001 per share.

FIFTH: In furtherance and not in limitation of the powers conferred by law, subject to any limitations contained elsewhere in this Certificate of Incorporation, by-laws of the Corporation may be adopted, amended or repealed by a majority of the board of directors of the Corporation (the “Board of Directors”), but any by-laws adopted by the Board of Directors may be amended or repealed by the stockholders entitled to vote thereon. Election of directors need not be by written ballot.

SIXTH: In addition to the powers and authority herein before or by statute expressly conferred upon them, the Board of Directors is hereby empowered to exercise all such powers and do all such acts and things as may be exercised or done by the Corporation, subject, nevertheless, to the provisions of the General Corporation Law of the State of Delaware, this Certificate of Incorporation, and the by-laws of the Corporation.

SEVENTH: A director of the Corporation shall not be liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except to the extent such exemption from liability or limitation thereof is not permitted under the General Corporation Law of the State of Delaware as the same exists or may hereafter be amended. Any amendment, modification or repeal of the foregoing sentence shall not adversely affect any right or protection of a director of the Corporation hereunder in respect of any act or omission occurring prior to the time of such amendment, modification or repeal.