diff --git a/js/legacy/commentcollection.js b/js/legacy/commentcollection.js
new file mode 100644
index 000000000..e4faf4e5b
--- /dev/null
+++ b/js/legacy/commentcollection.js
@@ -0,0 +1,161 @@
+/**
+ * @licence
+ */
+
+import CommentModel from './commentmodel.js';
+import CommentSummaryModel from './commentsummarymodel.js';
+
+/**
+ * @class CommentCollection
+ * @classdesc
+ *
+ * Collection of comments assigned to a file
+ *
+ */
+var CommentCollection = OC.Backbone.Collection.extend(
+	/** @lends OCA.AnnouncementCenter.Comments.CommentCollection.prototype */ {
+
+	sync: OC.Backbone.davSync,
+
+	model: CommentModel,
+
+	/**
+	 * Object type
+	 *
+	 * @type string
+	 */
+	_objectType: 'deckCard',
+
+	/**
+	 * Object id
+	 *
+	 * @type string
+	 */
+	_objectId: null,
+
+	/**
+	 * True if there are no more page results left to fetch
+	 *
+	 * @type bool
+	 */
+	_endReached: false,
+
+	/**
+	 * Number of comments to fetch per page
+	 *
+	 * @type int
+	 */
+	_limit : 2,
+
+	/**
+	 * Initializes the collection
+	 *
+	 * @param {string} [options.objectType] object type
+	 * @param {string} [options.objectId] object id
+	 */
+	initialize: function(models, options) {
+		options = options || {};
+		if (options.objectType) {
+			this._objectType = options.objectType;
+		}
+		if (options.objectId) {
+			this._objectId = options.objectId;
+		}
+	},
+
+	url: function() {
+		return OC.linkToRemote('dav') + '/comments/' +
+			encodeURIComponent(this._objectType) + '/' +
+			encodeURIComponent(this._objectId) + '/';
+	},
+
+	setObjectId: function(objectId) {
+		this._objectId = objectId;
+	},
+
+	hasMoreResults: function() {
+		return !this._endReached;
+	},
+
+	reset: function() {
+		this._endReached = false;
+		this._summaryModel = null;
+		return OC.Backbone.Collection.prototype.reset.apply(this, arguments);
+	},
+
+	/**
+	 * Fetch the next set of results
+	 */
+	fetchNext: function(options) {
+		var self = this;
+		if (!this.hasMoreResults()) {
+			return null;
+		}
+
+		var body = '<?xml version="1.0" encoding="utf-8" ?>\n' +
+			'<oc:filter-comments xmlns:D="DAV:" xmlns:oc="http://owncloud.org/ns">\n' +
+			// load one more so we know there is more
+			'    <oc:limit>' + (this._limit + 1) + '</oc:limit>\n' +
+			'    <oc:offset>' + this.length + '</oc:offset>\n' +
+			'</oc:filter-comments>\n';
+
+		options = options || {};
+		var success = options.success;
+		options = _.extend({
+			remove: false,
+			parse: true,
+			data: body,
+			davProperties: CommentCollection.prototype.model.prototype.davProperties,
+			success: function(resp) {
+				if (resp.length <= self._limit) {
+					// no new entries, end reached
+					self._endReached = true;
+				} else {
+					// remove last entry, for next page load
+					resp = _.initial(resp);
+				}
+				if (!self.set(resp, options)) {
+					return false;
+				}
+				if (success) {
+					success.apply(null, arguments);
+				}
+				self.trigger('sync', 'REPORT', self, options);
+			}
+		}, options);
+
+		return this.sync('REPORT', this, options);
+	},
+
+	/**
+	 * Returns the matching summary model
+	 *
+	 * @return {OCA.AnnouncementCenter.Comments.CommentSummaryModel} summary model
+	 */
+	getSummaryModel: function() {
+		if (!this._summaryModel) {
+			this._summaryModel = new CommentSummaryModel({
+				id: this._objectId,
+				objectType: this._objectType
+			});
+		}
+		return this._summaryModel;
+	},
+
+	/**
+	 * Updates the read marker for this comment thread
+	 *
+	 * @param {Date} [date] optional date, defaults to now
+	 * @param {Object} [options] backbone options
+	 */
+	updateReadMarker: function(date, options) {
+		options = options || {};
+
+		return this.getSummaryModel().save({
+			readMarker: (date || new Date()).toUTCString()
+		}, options);
+	}
+});
+
+export default CommentCollection;
+
diff --git a/js/legacy/commentmodel.js b/js/legacy/commentmodel.js
new file mode 100644
index 000000000..3f9b72e08
--- /dev/null
+++ b/js/legacy/commentmodel.js
@@ -0,0 +1,72 @@
+
+var NS_OWNCLOUD = 'http://owncloud.org/ns';
+/**
+ * @class OCA.AnnouncementCenter.Comments.CommentModel
+ * @classdesc
+ *
+ * Comment
+ *
+ */
+var CommentModel = OC.Backbone.Model.extend(
+	/** @lends OCA.Comments.CommentModel.prototype */ {
+	sync: OC.Backbone.davSync,
+
+	/**
+	 * Object type
+	 *
+	 * @type string
+	 */
+	_objectType: 'deckCard',
+
+	/**
+	 * Object id
+	 *
+	 * @type string
+	 */
+	_objectId: null,
+
+	initialize: function(model, options) {
+		options = options || {};
+		if (options.objectType) {
+			this._objectType = options.objectType;
+		}
+		if (options.objectId) {
+			this._objectId = options.objectId;
+		}
+	},
+
+	defaults: {
+		actorType: 'users',
+		objectType: 'deckCard'
+	},
+
+	davProperties: {
+		'id': '{' + NS_OWNCLOUD + '}id',
+		'message': '{' + NS_OWNCLOUD + '}message',
+		'actorType': '{' + NS_OWNCLOUD + '}actorType',
+		'actorId': '{' + NS_OWNCLOUD + '}actorId',
+		'actorDisplayName': '{' + NS_OWNCLOUD + '}actorDisplayName',
+		'creationDateTime': '{' + NS_OWNCLOUD + '}creationDateTime',
+		'objectType': '{' + NS_OWNCLOUD + '}objectType',
+		'objectId': '{' + NS_OWNCLOUD + '}objectId',
+		'isUnread': '{' + NS_OWNCLOUD + '}isUnread'
+	},
+
+	parse: function(data) {
+		return {
+			id: data.id,
+			message: data.message,
+			actorType: data.actorType,
+			actorId: data.actorId,
+			actorDisplayName: data.actorDisplayName,
+			creationDateTime: data.creationDateTime,
+			objectType: data.objectType,
+			objectId: data.objectId,
+			isUnread: (data.isUnread === 'true')
+		};
+	},
+
+});
+
+export default CommentModel;
+
diff --git a/js/legacy/commentsummarymodel.js b/js/legacy/commentsummarymodel.js
new file mode 100644
index 000000000..ca80d329c
--- /dev/null
+++ b/js/legacy/commentsummarymodel.js
@@ -0,0 +1,54 @@
+
+var NS_OWNCLOUD = 'http://owncloud.org/ns';
+/**
+ * @class OCA.AnnouncementCenter.Comments.CommentSummaryModel
+ * @classdesc
+ *
+ * Model containing summary information related to comments
+ * like the read marker.
+ *
+ */
+var CommentSummaryModel = OC.Backbone.Model.extend(
+	/** @lends OCA.AnnouncementCenter.Comments.CommentSummaryModel.prototype */ {
+	sync: OC.Backbone.davSync,
+
+	/**
+	 * Object type
+	 *
+	 * @type string
+	 */
+	_objectType: 'deckCard',
+
+	/**
+	 * Object id
+	 *
+	 * @type string
+	 */
+	_objectId: null,
+
+	davProperties: {
+		'readMarker': '{' + NS_OWNCLOUD + '}readMarker'
+	},
+
+	/**
+	 * Initializes the summary model
+	 *
+	 * @param {string} [options.objectType] object type
+	 * @param {string} [options.objectId] object id
+	 */
+	initialize: function(attrs, options) {
+		options = options || {};
+		if (options.objectType) {
+			this._objectType = options.objectType;
+		}
+	},
+
+	url: function() {
+		return OC.linkToRemote('dav') + '/comments/' +
+			encodeURIComponent(this._objectType) + '/' +
+			encodeURIComponent(this.id) + '/';
+	}
+});
+
+export default CommentSummaryModel;
+