The European Commission had found that Google's shopping service had seen traffic jump 45-fold in the United Kingdom when it began to abuse its dominance.
Last week, EU officials said a plan that Google recently filed to comply with European regulations appeared to be a step "in the right direction".
Google is still obliged to pay up despite the legal challenge, but it can put the money in a locked account until the court reaches a decision.
The Commission, which ordered Google to stop the practice by September 28, is reviewing Google's proposal on how it would comply with the European Union decision.
The EU's enforcement wing, the European Commission, issued the massive penalty in June, accusing Google of boosting its own comparative shopping tool in its search results at the expense of other services.
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Google has chose to appeal the record-breaking fine imposed on it by the European Union's highest antitrust authority in July.
The EU Court of Justice told a lower tribunal last Wednesday to re-examine USA chipmaker Intel's appeal against a 1.06 billion euro fine, dealing a rare setback to the Commission.
The appeal, which the court has confirmed receiving, will take some time to be heard and is likely to result in prolonged expensive hearings, but an unapologetic Commission on Monday insisted that it will "defend its decision in court".
Regulators are also expected to levy fines in separate investigations into Google's Android mobile-phone software - possibly as soon as next month - and the AdSense advertising service.