HFST: Patents to be avoided

see also:

OMorFi: Patents to be avoided

The project does not foresee any particular protective measures for the knowledge generated in the project and the knowledge generated will be considered to be in the public domain under the LGPL license in order to avoid patentability. The project will take care to avoid existing patents in order to make the generated knowledge as freely useful as possible. Especially the following patent protected facilities and algorithms will be avoided:

  • tokenization (US Pat. 4750122, 4991094, 5721939, 5890103, 6182029)
  • determinizing and minimizing an FST (US Pat. 6456971)
  • approximate weighted FSA (US Pat. 6073098),
  • morpheme and grammar acquisition (US. Pat 4816994, 6317707, 6411932, 6681206, 6363342)
  • word/speech recognition (US Pat. 4010445, 4092493, 4158236, 4400828, 4744050)
  • machine translation (US Pat. 4417319, 4439836, 4502128, 4787038, 4791587, 5510981, 5768603, 6131082)
  • proper noun identification (US Pat. 6694055)
  • tagging (US Pat. 4868750, 5146405, 5610812, 5822731, 6182028, 6182029, 6910004)
  • morphology (US Pat. 5873660)
  • parsing (US Pat. 4816995, 4868750, 5083268, 5095432, 5475588, 5828991)
  • dictionaries (US Pat. 3932859, 4218760, 4342085, 4339806, 4367537, 4503514, 4590560, 4747053, 4782464, 4912671, 5189610, 5333313, 5523946, 5815096, 6047298)
  • fuzzy search (US Pat. 6018735)
  • regular expressions (US Pat. 6880087, 6757647)
  • spelling (US Pat. 3969698, 3969700, 3995254, 4136395, 4164025, 4256924, 4328561, 4355302, 4355371, 4383307, 4388495, 4456969, 4456973, 4580241, 4651300, 4655620, 4689768, 4671684, 4672571, 4701851, 4797855, 4829472, 4830521, 5485372, 5521816, 5576955, 5761689, 5761689, 5802537, 5907839, 6016471, 6047300, 6424983, 6618697)
  • FSM compression (US Pat. 5523946, 5581780)
  • word-number mapping (US Pat. 5325091, 5754847, 6233580)
  • hyphenation (US Pat. 4092729, 4456969, 5560037, 5737621)
  • thesauri (US Pat. 5551049, 5594641, 5625554)
  • word/script concatenation (US Pat. 3938099, 6601030)

The prior art without IPR restrictions will be exploited in the first place. Before implementing runtime compilers for lexicons, dictionaries and spellers, a survey on the relevant software patents should carried out. Unrestricted solutions should be used or developed and published.


-- KristerLinden & AnssiYliJyra - 07 Apr 2008


-- KristerLinden - 27 May 2008
Topic revision: r3 - 2009-09-30 - ErikAxelson
 
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