The Council of Europe and UN secure access to information in conventions. Domestic juridical/administrative remedies have to be exhausted first. Afterwards it is possible to complain to international bodies. In 4 German states a general access to information law is missing. The X. Baltic Sea NGO Forum examined the "The role of international lawmakers and their respective influence on national legislation on access to information" and suggested juridical remedies. Therefore a complaint against Bavaria was filed 14. July 2012. The appeal was denied 14. February 2014. Therefore a constitutional complaint 1 BvR 897/14 has been necessary and was filed 17 March 2014 and can be supported her. 13. January 2016 the Constitutional complaint was rejected. Therefore a complaint to European Court of Human Rights and a complain to UN was filed.
Germany ratified International Covenant on Civil and Political Rights (ICCPR) and European Convention for Human Rights (ECHR). According to Article 46 ECHR Germany is bound by decisions of the European Court of Human Rights (ECtHR). Domestic juridical/administrative remedies must be exhausted in order to complain to the UN Human Rights Committee  and the European Court of Human Rights .
Access to documents of public administration is a human right
according to the International Covenant on Civil and Political Rights
5] and jurisdiction
 of the European
Court of Human Rights (ECtHR) on the basis of the European Convention
for Human Rights (ECHR) 
and is seen as a precondition for democracy and important in the
fight of corruption.
UN, OSCE and AOS confirm in their Joint Declaration by the Three Special Mandates for Protecting Freedom of Expression 6. December 2004, that Access to Information is a human right: :
„The right to access information held by public authorities is a fundamental human right which should be given effect at the national level through comprehensive legislation (for example Freedom of Information Acts) based on the principle of maximum disclosure, establishing a presumption that all information is accessible subject only to a narrow system of exceptions."
The "General Comment No. 34 on Article 19 of the ICCPR" says :
"18. Article 19, paragraph 2 embraces a general right of access to information held by public bodies. Such information includes all records held by a public body, regardless of the form in which the information is stored, its source and the date of production."
"19. (...) States parties should also enact the necessary procedures, whereby one may gain access to information, such as by means of freedom of information legislation."
The federal Freedom of Information law (IFG) in Germany violates the principal of maximum disclosure of public documents. 100 states with more then 5.5 billion [9, 10] inhabitants adopted better ATI laws. 4 German states do not have ATI laws at all. 125 states  with 5.9 billion inhabitants i. e. 84 % of mankind adopted ATI laws or secured access to information in there constitutions. Can this human right be enforced by courts?
More then 110
States adopted FOI laws. In Europe and Central Asia 46 countries
covering 98% of the population have
adopted FOI laws at national level. Bavaria lacks a FOI law,
to access public documents of all sectors. The report CommDH(2007)14
of the Human Rights Commissioner Thomas Hammarberg about his visit to
Germany 9. – 11. and 15. – 20. October 2006 suggests to add human
rights to the core curricula in the legal education and practical
training of lawyers and educate judges and administration in human
rights. The petition II/VF.0993.15 to
the parliament in Bavaria suggests to follow the recommendation and
educate judges and administration in human rights. 3.
July 2008 the parliament answered: "The petition is finished
on the basis of the statements of the government." This means
the suggestions are dismissed. Both the parliament Landtag,
the ministry of justice (Justizministerium)
and ministry of interior (Innenministerium)
refused to give access to these statements, because it was written
for the parliament. 13. December 2011
 access was again requested, because the human right of access to
information is recognized by more then 115
states  with 5.9 billion inhabitants. These requests were
rejected 23. January 2012 and 31.
January 2012 with insufficient reasons. On 14. July 2012 a
complaint to the administrative court in Munich was filed .
13 June 2013 the court ruled to deny access e. g. because: Judgement BVerwG, of 16.09.1980, BVerwG 1 C 52.75 says that ECHR does not include access to public documents only access to generally accessible sources (e. g. newspapers). An appeal was filed 25 July 2013. The appeal was denied 14. February 2014. Therefore a constitutional complaint 1 BvR 897/14 has been necessary and was filed 17 March 2014. On 13. January 2016 the Constitutional complaint was rejected. Complaints to ECtHR and the UN Human Rights Committee are filed.
Access to information is a human right according to UN: http://right2info.org/international-and-regional-law-standards#section-0
Access to information in ECHR: http://right2info.org/international-and-regional-law-standards#section-4
UN, OSCE and AOS Joint Declaration by the Three Special Mandates for Protecting Freedom of Expression 6. December 2004: http://merlin.obs.coe.int/iris/2005/2/article1
"General Comment No. 34 on Article 19 of the ICCPR": http://www2.ohchr.org/english/bodies/hrc/comments.htm
Complains to UN Human Rights Committee: http://right2info.org/cases#section-6
Jurisdiction European Court of Human Rights (ECtHR): http://right2info.org/cases#section-2
Application for access of the reasons why the suggestions of the Human Rights Commissioner have been rejected: http://wkeim.bplaced.net/files/ifg-einsicht.htm
Complaint Administrative Court (Verwaltungsgericht) Munich: http://wkeim.bplaced.net/files/vgm-2012.htm
Access to Information Laws: http://right2info.org/access-to-information-laws
FOI Laws: Counts Vary Depending on Definitions: http://www.freedominfo.org/2011/10/foi-laws-counts-vary-slightly-depending-on-definitions/
Constitutional Provisions, Laws and Regulations: http://right2info.org/laws
Answers to complaint (VG München Az. M 17 K 12.3408):
14.07.2013: Complaint: http://wkeim.bplaced.net/files/vgm-2012.htm
26.07.2012: amount of controversy € 5 000.-
20.09.2012: Landtag Parliament denies access on the basis of petition regulations. "This is no violation of the ECHR and ICCPR."
10.10.2012: Application to access files at consul of the Federal Republic of Germany in Trondheim
14.10.2012: Answer of parliament: ECHR and ICCRP give access
VG München (07.11.2012): Copies of letters of 26.07.2012, 09.08.2012 and 16.08.2012 received
26.11.2012: Complaint has to be sent to government.
19.04.2013: Invitation to hearing 13.6.2013 , received 8.5.2013
13.06.2013: Judgement: Access denied e. g. because: Judgement BVerwG, of 16.09.1980, BVerwG 1 C 52.75 says that ECHR does not include access to public documents only access to generally accessible sources (e. g. newspapers)
27.06.2013: European Court for Human Rights YOUTH INITIATIVE FOR HUMAN RIGHTS v. SERBIA (Application no. 48135/06): ICCPR relevant for Human right of Access to Information
25. July 2013: Lawyer filed appeal.
27. August 2013: Bavarian Parliament writes that appeal has not to be granted
14. February 2014: Appeal is denied BayVGH BayVGH Az. 5 ZB 13.1559. http://wkeim.bplaced.net/files/http://openjur.de/u/680803.html
17. March 2014: Constitutional complaint filed.
2. April 2014: Enforcement of the Human Right of Access to Information in Bavaria/Germany https://www.betterplace.org/en/projects/17693-enforcement-of-the-human-right-of-access-to-information-in-bavaria-germany
13. January 2016: Constitutional complaint rejected.
14. Februar 2016: Complaint to the European Court of Human Rights Keim ./. Germany (IV) nr. 13912/16.
30. June 2016: Complaint declared not admissible
30. August 2012: Mr. Frank La Rue, UN Special Rapporteur: 5 German states fail to respect human right of access to information, found for 84% of the worlds population
4. November 2012: Should GRECO and HRC experts do the job they are paid for?
Keim, Walter (7. November 2012): Will OSCE Support the Human Right of Access to Public Documents?
Keim, Walter (31. March 2013): Will CoE Support the Human Right of Access to Information in Germany?
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Colours on picture: dark green: FOIA enacted. Yellow: pending law.. FOIA= Freedom of Information Act