Case law in Germany
For explanation of how the German system works, see German patent courts and appeals. Most importantly, remember that German courts don't always examine the complete validity of patents. When a decision is appealed, the appeal may be about a single aspect instead of the whole case. So if two companies have a dispute about a software patent where each says that they invented it first, the court may be asked to rule on the issue of who had the idea first, and won't look at whether the patent covers valid subject matter. A court may thus "uphold" a software patent, but the ruling may have no consequence for the question of whether software patents are valid are not.
(Can you help? Can someone check if this case really upheld a software patent?)
 Chronological list of articles
List of articles on en.swpat.org analysing German court rulings. Newest first:
- Motorola Mobility v. Apple ruling by Mannheim Regional Court on 9 December 2011
- Siemens ruling by German BGH on 22 April 2010
- Microsoft FAT ruling by German BGH on 20 April 2010
 Chronological list of cases
 2013, December: MS FAT patent held invalid by BPatG
- (See also: Microsoft's FAT patents)
- Slashdot: German Court Invalidates Microsoft FAT Patent
- Florian Mueller: Federal Patent Court of Germany invalidates Microsoft FAT patent, appeals court may disagree
- Techworld: German court invalidates Microsoft patent used for Motorola phone sales ban
This can still be appealed to the BGH (Federal Court of Justice).
 2012, July: FAT patent upheld by Mannheim Regional Court
- Florian Mueller: With German FAT patent ruling, Microsoft scores third court victory over Google in as many months
 2011, December: Smartphone patent upheldy by Mannheim Regional Court
 2010, May: document generation patent upheld
In May 2010, a German court published this 22 April 2010 decision:
(That page includes links to machine translations)
Which Florian Mueller says is a pretty clear endorsement of software patents:
 2010, May: Microsoft Fat patent upheld
In June 2010, a German court published this 20 April 2010 decision:
The outcome (the decision but not the rationale) had been published on 20 April 2010:
- German appeal court upholds Microsoft FAT patent, The H, April 2010 (also: slashdot story)
- Federal Patent Court declares FAT patent of Microsoft null and void, The H, April 2007 (also: slashdot story)
- FATal patent ruling in Germany?, by Florian Mueller
- German original: WINDOWS - Dateiverwaltung beruht auf, patentfähiger Erfindung (English translations[?]: Google, bing translator)
 2010, January
- German original: German Federal High Court ruling, January 20th 2010 "GBH X ZB 22/07" (English translations[?]: Google, bing translator)
 2006: UK's Lord Justice Jacobs' comments on German case law
The UK 2006 Aerotel v. Telco ruling, page 49, notes:
- "129. Two cases of the German BGH were brought to our attention. The first was Sprachananlyseeinrichtung (language analysing device) 11th May 220 X ZB 15/86 GRUR 200 1007, 454 OJ EPO 8-9/2002. The headnote accurately states the holding:
- “(a)An apparatus (computer) which is programmed in a specific way has technical character. The applies even if texts are edited on the computer.
- (b) For the purpose of assessing the technical character of such an apparatus it is not relevant whether the apparatus produces a (further) technical effect, whether technology is enriched by it or whether it makes a contribution to the state of the art.”
- 130. For reasons we confess we do not fully understand the BGH considered that the case was not concerned with the computer program as such exclusion. It therefore did not find it necessary to consider the EPO case law on the point. Significantly, in the more recent case of Jesco Schwarzer 28th September 2004 17
- 131. W (pat) 31/03, the BGH appears to have some reservations about Sprachananlyseeinrichtung, refusing to extend it to the image processing system of the claim because it was basically a claim to mathematical method as such even though it would implemented by a computer. Most significantly, however, the BGH declined to follow Hitachi (see para 3.2.2.).'
 2006: Judge Melullis' comments
The following are comments made by Judge Melullis of Germany's Bundesgerichtshof at a Symposium of European Patent Judges in September 2006. They were quoted in the UK's 2008 ruling on Symbian v. Comptroller General.
- "[his court] proceeds from the assumption that the prohibition on the patenting of software 'as such' means what the law says ... software is not patentable merely by virtue of being used in conjunction with a general-purpose computer"
Deprecating the reliance on the word "technical", he noted:
- "when assessing software as such, the program's interdependence with the technical device makes the technical content hard to deny"
 2002: Error searching
- German original: FFII page about the 2002 ruling with "forces of nature" (English translations[?]: Google, bing translator)
 2000: Computer program product
- German original: BPatG Fehlersuche 2000-07-28: computer program product (English translations[?]: Google, bing translator)
 1999: Digital Circuits
- Full name: X ZB 11/98 – Digital Circuits, 13th December 1999
This important ruling introduced the test of "controllable natural forces".
This legal wording was used in the EU by the anti-swpat campaign in September 2003.
 1986: Rolling Rod Splitting
 1976: Dispositionsprogramm
Described by FFII as a landmark case:
 Related pages on en.swpat.org
- German patent courts and appeals
- Software patents exist in Europe, mostly
- Case law in the UK
- Court cases and lawsuits
- Countries and regions
- Reading case law
- Controllable forces of nature - a proposed test, mostly based on German case law
- German high court declares all software potentially patentable, 19 May 2010, Florian Mueller
- Some problems of patent law from a German viewpoint, page 184, by Klaus-J. MELULLIS, Presiding judge at the Federal Court of Justice, Karlsruhe, Germany.
- Patent Jurisprudence on a Slippery Slope, by FFII - the links on this page are extensive and have descriptions, and they're almost all about Germany, such as:
- Page about a 1976 BGH decision
- German Federal Court of Justice Confirms New German Approach To Software Patent Examination (BGH X ZR 121/09), 23 July 2011, ksnh::law
- Apple Wins German Patent Case Against Motorola Mobility, 1 Mar 2012, Bloomberg
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