Archroma, a global leader in color and specialty chemicals, today announced a successful outcome from opposition proceedings held at the European Patent Office (EPO).

The invention, which allows more efficient use of optical brightening agents, is a new illustration of how Archroma continuously works with its partners in the paper industry to provide innovations that combine both performance and ecological benefits.

On August 22, 2012, the EPO granted Archroma and International Paper a European patent, which is presently in force in fifteen member states of the European Patent Convention. The patent claims and protects aqueous sizing compositions for optical brightening of substrates for ink jet printing comprising binder, divalent metal salt, and a specific optical brightener. The European Patent 2,192,230, jointly owned by Archroma and International Paper, was upheld with only minimal amendment to the scope of the claims. The oral proceedings of October 6, 2015 resulted following an opposition to the patent filed by two parties. The Opposition Division of the EPO came to this decision on October 6, 2015 after a public hearing in opposition proceedings. The reasons for the Opposition Division’s decision, setting out a full assessment of the facts and arguments, will be published at a later date.

Valerie Diele-Braun, President of Archroma’s Paper Solutions, comments: “We are pleased that the invention resulting from a joint development between our two companies has been confirmed by the EPO. Archroma takes pride in working with customers to provide innovative solutions delivering business success.”

Archroma and International Paper were represented at the oral proceedings by the law firm of Wallinger, Ricker, Schlotter, Tostmann (WRST).

END

Media Relations

Josina van der Velden

EMG

+31 164 317 014

jvandervelden@emg-pr.com

Muriel Werlé

Archroma

+65 68667422 or +65 9836 8772

muriel.werle@archroma.com

Notes For Editors

About Archroma

Archroma is a global color and specialty chemicals company headquartered in Reinach near Basel, Switzerland. It operates with 3,000 employees over 35 countries and with 25 production sites. Its three businesses – Brand & Performance Textile Specialties, Packaging & Paper Specialties, and Coatings, Adhesives & Sealants – deliver specialized performance and color solutions to meet customers’ needs in their local markets, touching and coloring people’s lives every day, everywhere.

Archroma is passionate about delivering leading and innovative solutions, enhancing people’s lives and respecting the planet. The company is committed to challenging the status quo in the deep belief that it can make its industry sustainable; an approach reflected in its innovations, world-class quality standards, high service levels and cost-efficiency. Products enhanced, colors enhanced, performance enhanced – “Life enhanced”.

www.archroma.com

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