Exhibit 99.1

The Offer is not being made, and this press release may not be distributed, directly or indirectly, in or into, nor will any tender of shares be accepted from or on behalf of holders in, Australia, Hong Kong, Japan, Canada, New Zealand or South Africa, or any other jurisdiction in which the making of the Offer, the distribution of this press release or the acceptance of any tender of shares would contravene applicable laws or regulations or require further offer documents, filings or other measures in addition to those required under Swedish and U.S. law.

This press release has been published in Swedish and English. In the event of any discrepancy in content between the language versions, the Swedish version shall prevail.

PRESS RELEASE, July 9, 2015 (CET)

Infinera’s offer document approved and published

On April 9, 2015, Infinera Corporation (NASDAQ: INFN) (“Infinera”) announced a recommended public offer to the shareholders of Transmode AB (“Transmode”) to tender all their shares in Transmode to Infinera (the “Offer”). On June 29, 2015, Infinera announced that the Offer had been enhanced by providing Transmode shareholders with an additional consideration alternative. Today, Infinera announces that the offer document relating to the Offer has been approved by the Swedish Financial Supervisory Authority. The offer document and acceptance forms are available at www.infinera.se and www.sebgroup.com/prospectuses.

The offer document and the acceptance form will be distributed to shareholders in Transmode whose shares were directly registered with Euroclear Sweden AB as at July 7, 2015. Copies of the offer document and acceptance forms are provided free of charge upon request. Such request may be made by telephone to SEB Issue Department, +46 8 639 2750. Infinera has also filed a Registration Statement on Form S-4 with the U.S. Securities and Exchange Commission which will be distributed to shareholders in Transmode whose shares were directly registered with Euroclear Sweden AB as at July 7, 2015. The Registration Statement on Form S-4 will also be available free of charge through the website maintained by the SEC at www.sec.govand through Infinera’s website www.infinera.com under the heading “SEC Filings” “Company—Investor Relations”.

The acceptance period for the Offer runs from and including July 10, 2015 up to and including August 7, 2015. Settlement is expected to commence around August 20, 2015. Infinera reserves the right to extend the acceptance period, as well as to defer payment of consideration. Infinera will announce any extension of the acceptance period and/or postponement of the settlement by a press release in accordance with applicable laws and regulations.

Further information about the Offer

The aforementioned press releases and further information about the Offer are available at:

www.infinera.se.

_____________________________________

Sunnyvale, California, USA

July 9, 2015 (CET)

Infinera Corporation

Infinera discloses the information provided herein pursuant to the Swedish Financial Instruments Trading Act and the Takeover Rules. The information was submitted for publication on July 9, 2015, 08:00 a.m. CET.

_____________________________________

For further information, please contact:

Media (Europe): VERO Communications  Tel. +46 8 611 38 30 johan@vero.se Media (Rest of World): Anna Vue Tel. +1 (916) 595-8157 avue@infinera.com Investors (Europe): Morgan Stanley & Co. International plc Tel. +46 8 6789600 Erik Tregaard Managing Director erik.tregaard@MorganStanley.com Erik Ohman Managing Director erik.ohman@MorganStanley.com Investors (Rest of World): Jeff Hustis Tel: +1 (408) 213-7150 jhustis@infinera.com

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Important information

The Offer is not being made to persons whose participation in the Offer requires that an additional offer document be prepared or registration effected or that any other measures be taken in addition to those required under Swedish and U.S. law and regulations.

This press release and any related Offer documentation are not being distributed and must not be mailed or otherwise distributed or sent in or into any country in which the distribution or offering would require any such additional measures to be taken or would be in conflict with any law or regulation in such country – any such action will not be permitted or sanctioned by Infinera. Any purported acceptance of the Offer resulting directly or indirectly from a violation of these restrictions may be disregarded.

The Offer is not being and will not be made, directly or indirectly, in or into, or by use of mail or any other means or instrumentality of interstate or foreign commerce of, or any facilities of a national securities exchange of, Australia, Hong Kong, Japan, Canada, New Zealand or South Africa. This includes, but is not limited to facsimile transmission, electronic mail, telex, telephone, the internet and other forms of electronic transmission. The Offer cannot be accepted and shares may not be tendered in the Offer by any such use, means, instrumentality or facility of, or from within Australia, Hong Kong, Japan, Canada, New Zealand or South Africa or by persons located or resident in Australia, Hong Kong, Japan, Canada, New Zealand or South Africa. Accordingly, this press release and any related Offer documentation are not being and should not be mailed or otherwise transmitted, distributed, forwarded or sent in or into Australia, Hong Kong, Japan, Canada, New Zealand or South Africa or to any Australian, Hong Kong, Japanese, Canadian, New Zealand or South African persons or any persons located or resident in Australia, Hong Kong, Japan, Canada, New Zealand or South Africa.

Any purported tender of shares in an Offer resulting directly or indirectly from a violation of these restrictions will be invalid and any purported tender of shares made by a person located in Australia, Hong Kong, Japan, Canada, New Zealand or South Africa or any agent fiduciary or other intermediary acting on a non-discretionary basis for a principal giving instructions from within Australia, Hong Kong, Japan, Canada, New Zealand or South Africa will be invalid and will not be accepted. Each holder of shares participating in the Offer will represent that it is not an Australian, Hong Kong, Japanese, Canadian, New Zealand or South African person, is not located in Australia, Hong Kong, Japan, Canada, New Zealand or South Africa and is not participating in such Offer from Australia, Hong Kong, Japan, Canada, New Zealand or South Africa or that it is acting on a non-discretionary basis for a principal that is not an Australian, Hong Kong, Japanese, Canadian, New Zealand or South African person, that is located outside Australia, Hong Kong, Japan, Canada, New Zealand or South Africa and that is not giving an order to participate in such offer from Australia, Hong Kong, Japan, Canada, New Zealand or South Africa. Infinera will not deliver any consideration from the Offer into Australia, Hong Kong, Japan, Canada, New Zealand or South Africa.

This press release is not being, and must not be, sent to shareholders with registered addresses in Australia, Hong Kong, Japan, Canada, New Zealand or South Africa. Banks, brokers, dealers and other nominees holding shares for persons in Australia, Hong Kong, Japan, Canada, New Zealand or South Africa must not forward this press release or any other document received in connection with the Offer to such persons.

The Offer will not be made to, nor will exchanges be accepted from, or on behalf of, holders of shares in any jurisdiction in which the making of the Offer or the acceptance thereof would not comply with the laws of that jurisdiction. The acceptance period for the Offer for shares of Transmode described in this communication has not commenced.

In connection with the proposed combination of Infinera and Transmode, the offer document related to the Offer has been approved on July 8, 2015 by the Swedish Financial Supervisory Authority (the “SFSA”) and will be published by the SFSA. In addition, Infinera has filed a Registration Statement on Form S-4 with the Securities and Exchange Commission (“SEC”). Shareholders of Transmode should read the above referenced documents and materials carefully when such documents and materials become available, as well as other documents filed with the SEC and with the SFSA, because they will contain important

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information about the transaction. Infinera may not exchange the common stock referenced in the preliminary prospectus until the Registration Statement on Form S-4 filed with the SEC becomes effective. Shareholders of Transmode may obtain free copies of these documents and materials, any amendments or supplements thereto and other documents containing important information about Infinera and the transaction, once such documents and materials are filed with the SEC, through the website maintained by the SEC at www.sec.gov. Copies of the documents and materials filed with the SEC by Infinera will also be available free of charge from Infinera’s website (www.infinera.com) under the heading “SEC Filings” in the “Company—Investor Relations” portion of Infinera’s website.

Forward-looking information

Statements in this press release relating to future events, status and circumstances, including statements regarding future financial or operating performance, growth and other projections as well as benefits of the Offer, are forward-looking statements. These statements may generally, but not always, be identified by the use of words such as “anticipates,” “expects,” “believes,” “continue,” “intends,” “target,” “projects,” “contemplates,” “plans,” “seeks,” “estimates,” “could,” “should,” “feels,” “will,” “would,” “may,” “can,” “potential” or similar expressions or variations, or the negative of these terms. By their nature, forward-looking statements involve risks and uncertainties because they relate to events and depend on circumstances that may or may not occur in the future. There can be no assurance that actual results will not differ materially from those expressed or implied by these forward-looking statements due to a variety of factors, many of which are outside the control of Infinera. These risks and uncertainties include, but are not limited to, the risk that Transmode shareholders fail to tender more than 90 percent of Transmode’s outstanding shares, that any of the other closing conditions are not satisfied, and that the transaction may not close; the risk that Transmode’s and Infinera’s businesses will not be integrated successfully; the risk that synergies will not be realized or realized to the extent anticipated; the risk that the Combined Company will not realize on its financing or operating strategies; the risk that litigation with respect to either company or the transaction could arise; and the risk that disruption caused by the Combined Company would make it difficult to maintain certain strategic relationships. These risks and uncertainties also include those risks and uncertainties that are discussed in the offer document approved by the SFSA. Infinera cautions investors not to place considerable reliance on the forward-looking statements contained in this press release. Any forward-looking statements contained in this press release speak only as of the date on which they were made and Infinera has no obligation (and undertakes no such obligation) to update or revise any of them, whether as a result of new information, future events or otherwise, except for in accordance with applicable laws and regulations.

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