Display problem when requesting numberlist containing special characters

PatZilla Troubleshooting / Fehleranalyse
#1

Recently, a user reported to us having problems when querying by numberlist like

image

While this was part of a larger numberlist, let’s take a smaller sample for investigation:

2xEP, 1xJP
EP 02207839B1
EP 02612740A1
JP 2010046925A
#2

Investigation

It turned out that the input numberlist contained tab characters chr(9) for separating the country code from the number part.

In fact, the raw input payload was:

EP	02207839B1
EP	02612740A1
JP	2010046925A

Observations

  1. It looks like just the JP 2010046925A document number would not get sanitized properly:
    image

  2. Funny enough, requesting numbers containing tab characters with EP-only numbers works, e.g.:
    https://patzilla.ip-tools.io/?numberlist=EP 02207839B1%2CEP 02612740A1

  3. while the same number list adding a single JP number makes the whole page rendering go haywire, e.g.
    https://patzilla.ip-tools.io/?numberlist=EP 02207839B1%2CEP 02612740A1%2CJP 2010046925A