Court blocks prior art time travel

Managing IP is part of Legal Benchmarking Limited, 1-2 Paris Gardens, London, SE1 8ND

Copyright © Legal Benchmarking Limited and its affiliated companies 2026

Accessibility | Terms of Use | Privacy Policy | Modern Slavery Statement

Court blocks prior art time travel

time-travel-min-final.jpg

In the latest international briefing for Germany, Julia Mössinger examines a court decision dealing with prior art disclosure

In Drahtloses Kommunikationsnetz (X ZR 14/17), the German Federal Court of Justice had to deal with a prior art disclosure that had been published online. Internet publications are published at the same time in different time zones on different local dates.

The disclosure in question was published online at 8:36 CET on January 8 2008 on a European server. Due to the time difference, the document was available in Hawaii on January 7 2008 local time. The plaintiff claimed that the disclosure's publication date was January 7 2008.

Three different scenarios were discussed:

(i) The publication date of a disclosure is determined by the time zone of the patent office receiving the patent application. Even if a disclosure is published in Hawaii at an earlier (local) date, the relevant date is the (local) date at the patent office at the time of publishing the disclosure (applied by High Court, Birss J [2015] EWHC 3366, Court of Appeal, Gross LJ, Floyd LJ, Arnold J, [2017] EWCA Civ 266 - Unwired Planet International Ltd v Huawei Technologies Co Ltd; EPO Opposition Division - 03 012 734.4).

(ii) The publication date of a disclosure is the local date where publication occurs. In case of an internet upload, this should be according to the geographical location of the person/entity uploading the disclosure.

(iii) The publication date is considered the earliest local date of any location where the prior art disclosure became available. Hence, the publication date of an online publication is the local date of the time zone with the earliest time where the disclosure is available (applied by EPO, 09 733 661.4).

The court rejected scenario (iii), holding that there is no basis for extending the time of a disclosure beyond the geographic location of the publication. Further, scenario (iii) requires determining the exact time (hour, minute) of publication, which may cause difficulties.

Regarding scenarios (i) and (ii), no ruling was made, since both scenarios yielded the same result in the situation in question. Scenario (i) avoids a circumstance where a disclosure published after filing the application becomes prior art. However, it is necessary to determine the time of publication exactly in order to determine the local date at the receiving office.

For scenario (ii), the exact time of publication is not relevant. This scenario accords most with the principles applied by the PCT. For example, when filing priority applications and subsequent applications, the local date at the respective filing office is decisive. However, the second scenario does not rule out the possibility that a disclosure published after filing an application can become prior art.

Mossinger

Julia Mössinger


Maiwald Patentanwalts- und Rechtsanwaltsgesellschaft mbH


Elisenhof, Elisenstr 3

D-80335, Munich, Germany

Tel: +49 89 74 72 660 

Fax: +49 89 77 64 24

info@maiwald.eu

www.maiwald.eu

more from across site and SHARED ros bottom lb

More from across our site

Nick Redfearn, head of enforcement at Rouse and a classic car enthusiast, explains the sudden viral appearance of classic car restomod parts from China and the impact of IP in this new trade
Our 2026 rankings for Western Europe, taken with historical data, reveal that some European IP markets hardly change – while others are more fluid
Selina Hinchliffe, head of commercial services at Shakespeare Martineau, reflects on rejecting Cambridge, leading through empathy, and why authenticity matters more than fitting in
US corporates are using the UPC, but much of that work still flows to European boutiques. Last week’s merger, as well as others, could alter that dynamic
Publicly listed Australian group IPH delivered on its promise to profoundly shake up the Canadian market. Four years on, rivals have had time to adapt
IP practitioners debate whether new guidelines will make it more difficult to challenge a patent
Varuni Paranavitane says she is excited to bring ‘rounded expertise’ to the firm, which will have a solicitor in its ranks for the first time
Lawyers adapting to AI-driven recommendations are being pushed to demonstrate expertise publicly rather than simply relying on a polished website
Mid-market businesses looking to establish an online presence need ‘holistic’ brand protection services at an accessible cost, according to partners
Our latest update also includes the latest case filing statistics, and an update on how a transatlantic merger could be a UPC opportunity for the US half of the partnership
Gift this article